1131130312331 has 16 divisors (see below), whose sum is σ = 1204777670400. Its totient is φ = 1059658293408.

The previous prime is 1131130312313. The next prime is 1131130312339. The reversal of 1131130312331 is 1332130311311.

It is a cyclic number.

It is not a de Polignac number, because 1131130312331 - 2²² = 1131126118027 is a prime.

It is a super-2 number, since 2×1131130312331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131130312297 and 1131130312306.

It is not an unprimeable number, because it can be changed into a prime (1131130312339) 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, 1184321 + ... + 1914386.

It is an arithmetic number, because the mean of its divisors is an integer number (75298604400).

Almost surely, 2^{1131130312331} is an apocalyptic number.

1131130312331 is a deficient number, since it is larger than the sum of its proper divisors (73647358069).

1131130312331 is a wasteful number, since it uses less digits than its factorization.

1131130312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099058.

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

Adding to 1131130312331 its reverse (1332130311311), we get a palindrome (2463260623642).

The spelling of 1131130312331 in words is "one trillion, one hundred thirty-one billion, one hundred thirty million, three hundred twelve thousand, three hundred thirty-one".