31461764 has 12 divisors (see below), whose sum is σ = 58296924. Its totient is φ = 14805504.

The previous prime is 31461763. The next prime is 31461779. The reversal of 31461764 is 46716413.

It can be written as a sum of positive squares in 2 ways, for example, as 25000000 + 6461764 = 5000^2 + 2542^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31461764.

It is not an unprimeable number, because it can be changed into a prime (31461761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231269 + ... + 231404.

It is an arithmetic number, because the mean of its divisors is an integer number (4858077).

Almost surely, 2^31461764 is an apocalyptic number.

31461764 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31461764 is a deficient number, since it is larger than the sum of its proper divisors (26835160).

31461764 is a wasteful number, since it uses less digits than its factorization.

31461764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462694 (or 462692 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 31461764 is about 5609.0787122307. The cubic root of 31461764 is about 315.6901438454.

The spelling of 31461764 in words is "thirty-one million, four hundred sixty-one thousand, seven hundred sixty-four".