1357225631 has 4 divisors (see below), whose sum is σ = 1367586264. Its totient is φ = 1346865000.

The previous prime is 1357225619. The next prime is 1357225691. The reversal of 1357225631 is 1365227531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365227531 = 73 ⋅18701747.

It is a cyclic number.

It is not a de Polignac number, because 1357225631 - 2³⁰ = 283483807 is a prime.

It is a super-2 number, since 2×1357225631² = 3684122826886696322, 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 = 1357225591 and 1357225600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357225691) 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, 5180120 + ... + 5180381.

It is an arithmetic number, because the mean of its divisors is an integer number (341896566).

Almost surely, 2^1357225631 is an apocalyptic number.

1357225631 is a deficient number, since it is larger than the sum of its proper divisors (10360633).

1357225631 is a wasteful number, since it uses less digits than its factorization.

1357225631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360632.

The product of its digits is 37800, while the sum is 35.

The square root of 1357225631 is about 36840.5433048971. The cubic root of 1357225631 is about 1107.1777533685.

The spelling of 1357225631 in words is "one billion, three hundred fifty-seven million, two hundred twenty-five thousand, six hundred thirty-one".