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101402431 = 137800187
BaseRepresentation
bin1100000101101…
…00011100111111
321001210202222121
412002310130333
5201424334211
614021223411
72340622624
oct602643477
9231722877
10101402431
115226a169
1229b61b67
1318014c50
14d67834b
158d80271
hex60b473f

101402431 has 4 divisors (see below), whose sum is σ = 109202632. Its totient is φ = 93602232.

The previous prime is 101402419. The next prime is 101402443. The reversal of 101402431 is 134204101.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (101402419) and next prime (101402443).

It is a cyclic number.

It is not a de Polignac number, because 101402431 - 219 = 100878143 is a prime.

It is a super-2 number, since 2×1014024312 = 20564906025419522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101402461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3900081 + ... + 3900106.

It is an arithmetic number, because the mean of its divisors is an integer number (27300658).

Almost surely, 2101402431 is an apocalyptic number.

101402431 is a deficient number, since it is larger than the sum of its proper divisors (7800201).

101402431 is an equidigital number, since it uses as much as digits as its factorization.

101402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800200.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 101402431 is about 10069.8774073968. The cubic root of 101402431 is about 466.3186541995.

Adding to 101402431 its reverse (134204101), we get a palindrome (235606532).

The spelling of 101402431 in words is "one hundred one million, four hundred two thousand, four hundred thirty-one".

Divisors: 1 13 7800187 101402431