31464081 has 24 divisors (see below), whose sum is σ = 50150880. Its totient is φ = 18849600.

The previous prime is 31464079. The next prime is 31464137. The reversal of 31464081 is 18046413.

31464081 is a `hidden beast` number, since 3 + 14 + 640 + 8 + 1 = 666.

It is not a de Polignac number, because 31464081 - 2¹ = 31464079 is a prime.

It is a super-3 number, since 3×31464081³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (31464001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7026 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (2089620).

Almost surely, 2^31464081 is an apocalyptic number.

It is an amenable number.

31464081 is a deficient number, since it is larger than the sum of its proper divisors (18686799).

31464081 is a wasteful number, since it uses less digits than its factorization.

31464081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677 (or 3674 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 31464081 is about 5609.2852485856. The cubic root of 31464081 is about 315.6978933167.

It can be divided in two parts, 314640 and 81, that added together give a square (314721 = 561²).

The spelling of 31464081 in words is "thirty-one million, four hundred sixty-four thousand, eighty-one".