31463472 has 20 divisors (see below), whose sum is σ = 81280760. Its totient is φ = 10487808.

The previous prime is 31463459. The next prime is 31463477. The reversal of 31463472 is 27436413.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (31463477) 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, 327697 + ... + 327792.

It is an arithmetic number, because the mean of its divisors is an integer number (4064038).

Almost surely, 2^31463472 is an apocalyptic number.

It is an amenable number.

31463472 is an abundant number, since it is smaller than the sum of its proper divisors (49817288).

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

31463472 is a wasteful number, since it uses less digits than its factorization.

31463472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655500 (or 655494 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 31463472 is about 5609.2309633318. The cubic root of 31463472 is about 315.6958564834.

Adding to 31463472 its reverse (27436413), we get a palindrome (58899885).

The spelling of 31463472 in words is "thirty-one million, four hundred sixty-three thousand, four hundred seventy-two".