31402104 has 16 divisors (see below), whose sum is σ = 78505320. Its totient is φ = 10467360.

The previous prime is 31402103. The next prime is 31402121. The reversal of 31402104 is 40120413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402103) 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, 654187 + ... + 654234.

Almost surely, 2^31402104 is an apocalyptic number.

It is an amenable number.

31402104 is an abundant number, since it is smaller than the sum of its proper divisors (47103216).

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

31402104 is a wasteful number, since it uses less digits than its factorization.

31402104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308430 (or 1308426 counting only the distinct ones).

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

The square root of 31402104 is about 5603.7580247545. The cubic root of 31402104 is about 315.4904729966.

Adding to 31402104 its reverse (40120413), we get a palindrome (71522517).

The spelling of 31402104 in words is "thirty-one million, four hundred two thousand, one hundred four".