1011131431 has 2 divisors, whose sum is σ = 1011131432. Its totient is φ = 1011131430.

The previous prime is 1011131411. The next prime is 1011131479. The reversal of 1011131431 is 1341311101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011131431 - 2⁵ = 1011131399 is a prime.

It is a super-2 number, since 2×1011131431² = 2044773541512215522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011131411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505565715 + 505565716.

It is an arithmetic number, because the mean of its divisors is an integer number (505565716).

Almost surely, 2^1011131431 is an apocalyptic number.

1011131431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011131431 is an equidigital number, since it uses as much as digits as its factorization.

1011131431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1011131431 is about 31798.2928944307. The cubic root of 1011131431 is about 1003.6967938746.

Adding to 1011131431 its reverse (1341311101), we get a palindrome (2352442532).

The spelling of 1011131431 in words is "one billion, eleven million, one hundred thirty-one thousand, four hundred thirty-one".