31124124125105 has 16 divisors (see below), whose sum is σ = 40744842697728. Its totient is φ = 22635429552000.

The previous prime is 31124124125093. The next prime is 31124124125111. The reversal of 31124124125105 is 50152142142113.

It is not a de Polignac number, because 31124124125105 - 2¹² = 31124124121009 is a prime.

It is a super-2 number, since 2×31124124125105² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559445 + ... + 7909565.

It is an arithmetic number, because the mean of its divisors is an integer number (2546552668608).

Almost surely, 2^{31124124125105} is an apocalyptic number.

It is an amenable number.

31124124125105 is a deficient number, since it is larger than the sum of its proper divisors (9620718572623).

31124124125105 is a wasteful number, since it uses less digits than its factorization.

31124124125105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427128.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 31124124125105 its reverse (50152142142113), we get a palindrome (81276266267218).

The spelling of 31124124125105 in words is "thirty-one trillion, one hundred twenty-four billion, one hundred twenty-four million, one hundred twenty-five thousand, one hundred five".