1131213110031 has 40 divisors (see below), whose sum is σ = 1778912863200. Its totient is φ = 714969497088.

The previous prime is 1131213110011. The next prime is 1131213110051. The reversal of 1131213110031 is 1300113121311.

1131213110031 is a `hidden beast` number, since 11 + 312 + 1 + 311 + 0 + 0 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (1131213110011) and next prime (1131213110051).

It is not a de Polignac number, because 1131213110031 - 2¹⁹ = 1131212585743 is a prime.

It is a super-2 number, since 2×1131213110031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131213109986 and 1131213110013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131213110011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2476206 + ... + 2897243.

It is an arithmetic number, because the mean of its divisors is an integer number (44472821580).

Almost surely, 2^{1131213110031} is an apocalyptic number.

1131213110031 is a deficient number, since it is larger than the sum of its proper divisors (647699753169).

1131213110031 is a wasteful number, since it uses less digits than its factorization.

1131213110031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373597 (or 5373588 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1131213110031 its reverse (1300113121311), we get a palindrome (2431326231342).

The spelling of 1131213110031 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, one hundred ten thousand, thirty-one".