31400104 has 8 divisors (see below), whose sum is σ = 58875210. Its totient is φ = 15700048.

The previous prime is 31400099. The next prime is 31400119. The reversal of 31400104 is 40100413.

It can be written as a sum of positive squares in only one way, i.e., 31337604 + 62500 = 5598^2 + 250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962499 + ... + 1962514.

Almost surely, 2^31400104 is an apocalyptic number.

It is an amenable number.

31400104 is a deficient number, since it is larger than the sum of its proper divisors (27475106).

31400104 is a wasteful number, since it uses less digits than its factorization.

31400104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925019 (or 3925015 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 31400104 is about 5603.5795702390. The cubic root of 31400104 is about 315.4837749916.

Adding to 31400104 its reverse (40100413), we get a palindrome (71500517).

The spelling of 31400104 in words is "thirty-one million, four hundred thousand, one hundred four".