1137911231 has 2 divisors, whose sum is σ = 1137911232. Its totient is φ = 1137911230.

The previous prime is 1137911227. The next prime is 1137911293. The reversal of 1137911231 is 1321197311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1137911231 - 2² = 1137911227 is a prime.

It is a super-2 number, since 2×1137911231² = 2589683939271870722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1137911194 and 1137911203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1137911221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568955615 + 568955616.

It is an arithmetic number, because the mean of its divisors is an integer number (568955616).

Almost surely, 2^1137911231 is an apocalyptic number.

1137911231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137911231 is an equidigital number, since it uses as much as digits as its factorization.

1137911231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 29.

The square root of 1137911231 is about 33732.9398511307. The cubic root of 1137911231 is about 1044.0055192551.

The spelling of 1137911231 in words is "one billion, one hundred thirty-seven million, nine hundred eleven thousand, two hundred thirty-one".