31421464 has 16 divisors (see below), whose sum is σ = 58975920. Its totient is φ = 15694560.

The previous prime is 31421461. The next prime is 31421477. The reversal of 31421464 is 46412413.

It is a super-3 number, since 3×31421464³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421461) 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, 11757 + ... + 14179.

It is an arithmetic number, because the mean of its divisors is an integer number (3685995).

Almost surely, 2^31421464 is an apocalyptic number.

It is an amenable number.

31421464 is a deficient number, since it is larger than the sum of its proper divisors (27554456).

31421464 is a wasteful number, since it uses less digits than its factorization.

31421464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050 (or 4046 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 31421464 is about 5605.4851707948. The cubic root of 31421464 is about 315.5552949883. Note that the first 3 decimals are identical.

Adding to 31421464 its reverse (46412413), we get a palindrome (77833877).

The spelling of 31421464 in words is "thirty-one million, four hundred twenty-one thousand, four hundred sixty-four".