31004204 has 48 divisors (see below), whose sum is σ = 69248256. Its totient is φ = 11793600.

The previous prime is 31004201. The next prime is 31004221. The reversal of 31004204 is 40240013.

It is a super-2 number, since 2×31004204² = 1922521331347232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (31004201) 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, 12074 + ... + 14414.

It is an arithmetic number, because the mean of its divisors is an integer number (1442672).

Almost surely, 2^31004204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31004204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34624128).

31004204 is an abundant number, since it is smaller than the sum of its proper divisors (38244052).

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

31004204 is a wasteful number, since it uses less digits than its factorization.

31004204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 31004204 is about 5568.1418803763. The cubic root of 31004204 is about 314.1522649889.

Adding to 31004204 its reverse (40240013), we get a palindrome (71244217).

The spelling of 31004204 in words is "thirty-one million, four thousand, two hundred four".