13121543031 has 8 divisors (see below), whose sum is σ = 17496037104. Its totient is φ = 8747372160.

The previous prime is 13121543027. The next prime is 13121543069. The reversal of 13121543031 is 13034512131.

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

It is not a de Polignac number, because 13121543031 - 2² = 13121543027 is a prime.

It is a super-2 number, since 2×13121543031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13121542992 and 13121543010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121543131) 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, 39535 + ... + 166751.

It is an arithmetic number, because the mean of its divisors is an integer number (2187004638).

Almost surely, 2^13121543031 is an apocalyptic number.

13121543031 is a deficient number, since it is larger than the sum of its proper divisors (4374494073).

13121543031 is a wasteful number, since it uses less digits than its factorization.

13121543031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161601.

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 13121543031 in words is "thirteen billion, one hundred twenty-one million, five hundred forty-three thousand, thirty-one".