1031313121231 has 16 divisors (see below), whose sum is σ = 1077389579520. Its totient is φ = 986054826240.

The previous prime is 1031313121213. The next prime is 1031313121273. The reversal of 1031313121231 is 1321213131301.

It is a cyclic number.

It is not a de Polignac number, because 1031313121231 - 2⁵ = 1031313121199 is a prime.

It is a super-2 number, since 2×1031313121231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031313181231) 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, 3376885 + ... + 3669601.

It is an arithmetic number, because the mean of its divisors is an integer number (67336848720).

Almost surely, 2^{1031313121231} is an apocalyptic number.

1031313121231 is a deficient number, since it is larger than the sum of its proper divisors (46076458289).

1031313121231 is a wasteful number, since it uses less digits than its factorization.

1031313121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294114.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1031313121231 its reverse (1321213131301), we get a palindrome (2352526252532).

The spelling of 1031313121231 in words is "one trillion, thirty-one billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-one".