631039026 has 16 divisors (see below), whose sum is σ = 1267497504. Its totient is φ = 209443104.

The previous prime is 631038977. The next prime is 631039051. The reversal of 631039026 is 620930136.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 631038984 and 631039002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224296 + ... + 227091.

It is an arithmetic number, because the mean of its divisors is an integer number (79218594).

Almost surely, 2^631039026 is an apocalyptic number.

631039026 is an abundant number, since it is smaller than the sum of its proper divisors (636458478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631039026 is a wasteful number, since it uses less digits than its factorization.

631039026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451625.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 631039026 is about 25120.4901624152. The cubic root of 631039026 is about 857.7329084259.

The spelling of 631039026 in words is "six hundred thirty-one million, thirty-nine thousand, twenty-six".