1131107431 has 2 divisors, whose sum is σ = 1131107432. Its totient is φ = 1131107430.

The previous prime is 1131107429. The next prime is 1131107441. The reversal of 1131107431 is 1347011311.

It is a weak prime.

It is an emirp because it is prime and its reverse (1347011311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131107431 - 2¹ = 1131107429 is a prime.

It is a super-2 number, since 2×1131107431² = 2558808040926839522, which contains 22 as substring.

Together with 1131107429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131107401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565553715 + 565553716.

It is an arithmetic number, because the mean of its divisors is an integer number (565553716).

Almost surely, 2^1131107431 is an apocalyptic number.

1131107431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131107431 is an equidigital number, since it uses as much as digits as its factorization.

1131107431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1131107431 is about 33631.9406368410. The cubic root of 1131107431 is about 1041.9205853469.

Adding to 1131107431 its reverse (1347011311), we get a palindrome (2478118742).

The spelling of 1131107431 in words is "one billion, one hundred thirty-one million, one hundred seven thousand, four hundred thirty-one".