31473480 has 64 divisors (see below), whose sum is σ = 94815360. Its totient is φ = 8357888.

The previous prime is 31473479. The next prime is 31473487. The reversal of 31473480 is 8437413.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (31473487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41989 + ... + 42731.

It is an arithmetic number, because the mean of its divisors is an integer number (1481490).

Almost surely, 2^31473480 is an apocalyptic number.

31473480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31473480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47407680).

31473480 is an abundant number, since it is smaller than the sum of its proper divisors (63341880).

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

31473480 is a wasteful number, since it uses less digits than its factorization.

31473480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 31473480 is about 5610.1229933042. The cubic root of 31473480 is about 315.7293254449.

The spelling of 31473480 in words is "thirty-one million, four hundred seventy-three thousand, four hundred eighty".