31020411121 has 16 divisors (see below), whose sum is σ = 38268921600. Its totient is φ = 24555883968.

The previous prime is 31020411091. The next prime is 31020411133. The reversal of 31020411121 is 12111402013.

It is not a de Polignac number, because 31020411121 - 2⁹ = 31020410609 is a prime.

It is a super-2 number, since 2×31020411121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31020411095 and 31020411104.

It is not an unprimeable number, because it can be changed into a prime (31020411151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3317286 + ... + 3326623.

It is an arithmetic number, because the mean of its divisors is an integer number (2391807600).

Almost surely, 2^31020411121 is an apocalyptic number.

It is an amenable number.

31020411121 is a deficient number, since it is larger than the sum of its proper divisors (7248510479).

31020411121 is a wasteful number, since it uses less digits than its factorization.

31020411121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643968.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31020411121 its reverse (12111402013), we get a palindrome (43131813134).

The spelling of 31020411121 in words is "thirty-one billion, twenty million, four hundred eleven thousand, one hundred twenty-one".