13953631 has 2 divisors, whose sum is σ = 13953632. Its totient is φ = 13953630.

The previous prime is 13953613. The next prime is 13953649. The reversal of 13953631 is 13635931.

Together with previous prime (13953613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (13953613) and next prime (13953649).

It is a cyclic number.

It is not a de Polignac number, because 13953631 - 2¹⁹ = 13429343 is a prime.

It is a super-2 number, since 2×13953631² = 389407636168322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13953593 and 13953602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13953601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6976815 + 6976816.

It is an arithmetic number, because the mean of its divisors is an integer number (6976816).

Almost surely, 2^13953631 is an apocalyptic number.

13953631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13953631 is an equidigital number, since it uses as much as digits as its factorization.

13953631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 31.

The square root of 13953631 is about 3735.4559293345. The cubic root of 13953631 is about 240.7478466667.

The spelling of 13953631 in words is "thirteen million, nine hundred fifty-three thousand, six hundred thirty-one".