31124123913 has 8 divisors (see below), whose sum is σ = 42281828928. Its totient is φ = 20357917424.

The previous prime is 31124123911. The next prime is 31124123951. The reversal of 31124123913 is 31932142113.

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 31124123913 - 2¹ = 31124123911 is a prime.

It is a super-2 number, since 2×31124123913² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31124123911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97874445 + ... + 97874762.

It is an arithmetic number, because the mean of its divisors is an integer number (5285228616).

Almost surely, 2^31124123913 is an apocalyptic number.

It is an amenable number.

31124123913 is a deficient number, since it is larger than the sum of its proper divisors (11157705015).

31124123913 is a wasteful number, since it uses less digits than its factorization.

31124123913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195749263.

The product of its digits is 3888, while the sum is 30.

The spelling of 31124123913 in words is "thirty-one billion, one hundred twenty-four million, one hundred twenty-three thousand, nine hundred thirteen".