31402264 has 32 divisors (see below), whose sum is σ = 63216720. Its totient is φ = 14570496.

The previous prime is 31402249. The next prime is 31402271. The reversal of 31402264 is 46220413.

It is a happy number.

It is a super-2 number, since 2×31402264² = 1972204368651392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8347 + ... + 11509.

Almost surely, 2^31402264 is an apocalyptic number.

31402264 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31402264 is an abundant number, since it is smaller than the sum of its proper divisors (31814456).

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

31402264 is a wasteful number, since it uses less digits than its factorization.

31402264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 31402264 is about 5603.7723008702. The cubic root of 31402264 is about 315.4910088247.

Adding to 31402264 its reverse (46220413), we get a palindrome (77622677).

The spelling of 31402264 in words is "thirty-one million, four hundred two thousand, two hundred sixty-four".