1313232631 has 2 divisors, whose sum is σ = 1313232632. Its totient is φ = 1313232630.

The previous prime is 1313232619. The next prime is 1313232637. The reversal of 1313232631 is 1362323131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313232631 - 2⁹ = 1313232119 is a prime.

It is a super-2 number, since 2×1313232631² = 3449159886246364322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313232596 and 1313232605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313232637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656616315 + 656616316.

It is an arithmetic number, because the mean of its divisors is an integer number (656616316).

Almost surely, 2^1313232631 is an apocalyptic number.

1313232631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313232631 is an equidigital number, since it uses as much as digits as its factorization.

1313232631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

The square root of 1313232631 is about 36238.5517232684. The cubic root of 1313232631 is about 1095.0834659033.

Adding to 1313232631 its reverse (1362323131), we get a palindrome (2675555762).

It can be divided in two parts, 1313 and 232631, that multiplied together give a palindrome (305444503).

The spelling of 1313232631 in words is "one billion, three hundred thirteen million, two hundred thirty-two thousand, six hundred thirty-one".