31401204 has 12 divisors (see below), whose sum is σ = 73269504. Its totient is φ = 10467064.

The previous prime is 31401199. The next prime is 31401211. The reversal of 31401204 is 40210413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31401204² = 1972071225299232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308372 + ... + 1308395.

It is an arithmetic number, because the mean of its divisors is an integer number (6105792).

Almost surely, 2^31401204 is an apocalyptic number.

It is an amenable number.

31401204 is an abundant number, since it is smaller than the sum of its proper divisors (41868300).

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

31401204 is a wasteful number, since it uses less digits than its factorization.

31401204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616774 (or 2616772 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31401204 is about 5603.6777209258. The cubic root of 31401204 is about 315.4874589296.

Adding to 31401204 its reverse (40210413), we get a palindrome (71611617).

The spelling of 31401204 in words is "thirty-one million, four hundred one thousand, two hundred four".