31301133012131 has 4 divisors (see below), whose sum is σ = 31301146899792. Its totient is φ = 31301119124472.

The previous prime is 31301133012101. The next prime is 31301133012133. The reversal of 31301133012131 is 13121033110313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31301133012131 - 2³⁴ = 31283953142947 is a prime.

It is a super-2 number, since 2×31301133012131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301133012097 and 31301133012106.

It is not an unprimeable number, because it can be changed into a prime (31301133012133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697380 + ... + 8359313.

It is an arithmetic number, because the mean of its divisors is an integer number (7825286724948).

Almost surely, 2^{31301133012131} is an apocalyptic number.

31301133012131 is a deficient number, since it is larger than the sum of its proper divisors (13887661).

31301133012131 is a wasteful number, since it uses less digits than its factorization.

31301133012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13887660.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31301133012131 its reverse (13121033110313), we get a palindrome (44422166122444).

The spelling of 31301133012131 in words is "thirty-one trillion, three hundred one billion, one hundred thirty-three million, twelve thousand, one hundred thirty-one".