913631 has 8 divisors (see below), whose sum is σ = 975744. Its totient is φ = 852480.

The previous prime is 913589. The next prime is 913637. The reversal of 913631 is 136319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 913631 - 2¹⁸ = 651487 is a prime.

It is a super-2 number, since 2×913631² = 1669443208322, 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 = 913597 and 913606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671 + ... + 3911.

It is an arithmetic number, because the mean of its divisors is an integer number (121968).

2⁹¹³⁶³¹ is an apocalyptic number.

913631 is a deficient number, since it is larger than the sum of its proper divisors (62113).

913631 is a wasteful number, since it uses less digits than its factorization.

913631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its digits is 486, while the sum is 23.

The square root of 913631 is about 955.8404678606. The cubic root of 913631 is about 97.0339272683.

The spelling of 913631 in words is "nine hundred thirteen thousand, six hundred thirty-one".