1213013120031 has 16 divisors (see below), whose sum is σ = 1902765679200. Its totient is φ = 761106271104.

The previous prime is 1213013120021. The next prime is 1213013120051. The reversal of 1213013120031 is 1300213103121.

1213013120031 is a `hidden beast` number, since 1 + 21 + 301 + 312 + 0 + 0 + 31 = 666.

It is not a de Polignac number, because 1213013120031 - 2²¹ = 1213011022879 is a prime.

It is a super-2 number, since 2×1213013120031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213013119986 and 1213013120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213013120021) 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, 1321364596 + ... + 1321365513.

It is an arithmetic number, because the mean of its divisors is an integer number (118922854950).

Almost surely, 2^{1213013120031} is an apocalyptic number.

1213013120031 is a deficient number, since it is larger than the sum of its proper divisors (689752559169).

1213013120031 is a wasteful number, since it uses less digits than its factorization.

1213013120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642730135 (or 2642730129 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1213013120031 its reverse (1300213103121), we get a palindrome (2513226223152).

The spelling of 1213013120031 in words is "one trillion, two hundred thirteen billion, thirteen million, one hundred twenty thousand, thirty-one".