Search a number
-
+
131000030013421 = 198977468971031
BaseRepresentation
bin11101110010010011010010…
…010000010010011111101101
3122011211110222022220112221001
4131302103102100102133231
5114132301030140412141
61142340325531440301
736410303602443262
oct3562232220223755
9564743868815831
10131000030013421
11388168898626a8
1212838824bb6091
135813332b2bb3a
14244c6145b9269
15102292878ca31
hex7724d24127ed

131000030013421 has 8 divisors (see below), whose sum is σ = 139444147857600. Its totient is φ = 122710850111520.

The previous prime is 131000030013409. The next prime is 131000030013493. The reversal of 131000030013421 is 124310030000131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131000030013421 - 217 = 131000029882349 is a prime.

It is a super-2 number, since 2×1310000300134212 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000030014421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38734483825 + ... + 38734487206.

It is an arithmetic number, because the mean of its divisors is an integer number (17430518482200).

Almost surely, 2131000030013421 is an apocalyptic number.

It is an amenable number.

131000030013421 is a deficient number, since it is larger than the sum of its proper divisors (8444117844179).

131000030013421 is an equidigital number, since it uses as much as digits as its factorization.

131000030013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77468971139.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131000030013421 its reverse (124310030000131), we get a palindrome (255310060013552).

The spelling of 131000030013421 in words is "one hundred thirty-one trillion, thirty million, thirteen thousand, four hundred twenty-one".

Divisors: 1 19 89 1691 77468971031 1471910449589 6894738421759 131000030013421