31394630 has 16 divisors (see below), whose sum is σ = 58333824. Its totient is φ = 12152640.

The previous prime is 31394591. The next prime is 31394633. The reversal of 31394630 is 3649313.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31394593 and 31394602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31394633) 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, 50327 + ... + 50946.

It is an arithmetic number, because the mean of its divisors is an integer number (3645864).

Almost surely, 2^31394630 is an apocalyptic number.

31394630 is a deficient number, since it is larger than the sum of its proper divisors (26939194).

31394630 is a wasteful number, since it uses less digits than its factorization.

31394630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101311.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 31394630 is about 5603.0911111636. The cubic root of 31394630 is about 315.4654410975.

The spelling of 31394630 in words is "thirty-one million, three hundred ninety-four thousand, six hundred thirty".