Search a number
-
+
103021132031 = 229449873939
BaseRepresentation
bin101111111110010001…
…0011011100011111111
3100211220201102202021122
41133330202123203333
53141441402211111
6115154404221155
710304650113416
oct1377442334377
9324821382248
10103021132031
113a76681a334
1217b7169a7bb
13993a6b272c
144db43a847d
152a2e5a4cdb
hex17fc89b8ff

103021132031 has 4 divisors (see below), whose sum is σ = 103471006200. Its totient is φ = 102571257864.

The previous prime is 103021131977. The next prime is 103021132033. The reversal of 103021132031 is 130231120301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130231120301 = 711834241131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-103021132031 is a prime.

It is a super-2 number, since 2×1030211320312 (a number of 23 digits) 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 (103021132033) 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, 224936741 + ... + 224937198.

It is an arithmetic number, because the mean of its divisors is an integer number (25867751550).

Almost surely, 2103021132031 is an apocalyptic number.

103021132031 is a deficient number, since it is larger than the sum of its proper divisors (449874169).

103021132031 is an equidigital number, since it uses as much as digits as its factorization.

103021132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449874168.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103021132031 its reverse (130231120301), we get a palindrome (233252252332).

The spelling of 103021132031 in words is "one hundred three billion, twenty-one million, one hundred thirty-two thousand, thirty-one".

Divisors: 1 229 449873939 103021132031