1131130332431 has 4 divisors (see below), whose sum is σ = 1233960362664. Its totient is φ = 1028300302200.

The previous prime is 1131130332421. The next prime is 1131130332469. The reversal of 1131130332431 is 1342330311311.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131130332431 is a prime.

It is a super-2 number, since 2×1131130332431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131130332431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131130332401) 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, 51415015100 + ... + 51415015121.

It is an arithmetic number, because the mean of its divisors is an integer number (308490090666).

Almost surely, 2^{1131130332431} is an apocalyptic number.

1131130332431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131130332431 is a deficient number, since it is larger than the sum of its proper divisors (102830030233).

1131130332431 is a wasteful number, since it uses less digits than its factorization.

1131130332431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102830030232.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 1131130332431 its reverse (1342330311311), we get a palindrome (2473460643742).

The spelling of 1131130332431 in words is "one trillion, one hundred thirty-one billion, one hundred thirty million, three hundred thirty-two thousand, four hundred thirty-one".