13351631 has 2 divisors, whose sum is σ = 13351632. Its totient is φ = 13351630.

The previous prime is 13351589. The next prime is 13351633. The reversal of 13351631 is 13615331.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13615331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13351631 - 2¹⁰ = 13350607 is a prime.

It is a super-2 number, since 2×13351631² = 356532100720322, which contains 22 as substring.

Together with 13351633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13351597 and 13351606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13351633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6675815 + 6675816.

It is an arithmetic number, because the mean of its divisors is an integer number (6675816).

Almost surely, 2^13351631 is an apocalyptic number.

13351631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13351631 is an equidigital number, since it uses as much as digits as its factorization.

13351631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 23.

The square root of 13351631 is about 3653.9883688923. The cubic root of 13351631 is about 237.2346421312.

Adding to 13351631 its reverse (13615331), we get a palindrome (26966962).

The spelling of 13351631 in words is "thirteen million, three hundred fifty-one thousand, six hundred thirty-one".