31213233110131 has 8 divisors (see below), whose sum is σ = 31378154020304. Its totient is φ = 31048740011520.

The previous prime is 31213233110107. The next prime is 31213233110167. The reversal of 31213233110131 is 13101133231213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31213233110131 is a prime.

It is a super-2 number, since 2×31213233110131² (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 = 31213233110096 and 31213233110105.

It is not an unprimeable number, because it can be changed into a prime (31213230110131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106806585 + ... + 107098426.

It is an arithmetic number, because the mean of its divisors is an integer number (3922269252538).

Almost surely, 2^{31213233110131} is an apocalyptic number.

31213233110131 is a deficient number, since it is larger than the sum of its proper divisors (164920910173).

31213233110131 is a wasteful number, since it uses less digits than its factorization.

31213233110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213905781.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31213233110131 its reverse (13101133231213), we get a palindrome (44314366341344).

The spelling of 31213233110131 in words is "thirty-one trillion, two hundred thirteen billion, two hundred thirty-three million, one hundred ten thousand, one hundred thirty-one".