1357431131 has 16 divisors (see below), whose sum is σ = 1623349248. Its totient is φ = 1110542400.

The previous prime is 1357431107. The next prime is 1357431133. The reversal of 1357431131 is 1311347531.

It is a cyclic number.

It is not a de Polignac number, because 1357431131 - 2⁶ = 1357431067 is a prime.

It is a super-2 number, since 2×1357431131² = 3685238550815878322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357431094 and 1357431103.

It is not an unprimeable number, because it can be changed into a prime (1357431133) 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, 27005 + ... + 58686.

It is an arithmetic number, because the mean of its divisors is an integer number (101459328).

Almost surely, 2^1357431131 is an apocalyptic number.

1357431131 is a deficient number, since it is larger than the sum of its proper divisors (265918117).

1357431131 is an equidigital number, since it uses as much as digits as its factorization.

1357431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85802.

The product of its digits is 3780, while the sum is 29.

The square root of 1357431131 is about 36843.3322461473. The cubic root of 1357431131 is about 1107.2336304806.

Adding to 1357431131 its reverse (1311347531), we get a palindrome (2668778662).

The spelling of 1357431131 in words is "one billion, three hundred fifty-seven million, four hundred thirty-one thousand, one hundred thirty-one".