31542205404 has 12 divisors (see below), whose sum is σ = 73598479304. Its totient is φ = 10514068464.

The previous prime is 31542205397. The next prime is 31542205421. The reversal of 31542205404 is 40450224513.

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

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, 1314258547 + ... + 1314258570.

Almost surely, 2^31542205404 is an apocalyptic number.

It is an amenable number.

31542205404 is an abundant number, since it is smaller than the sum of its proper divisors (42056273900).

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

31542205404 is a wasteful number, since it uses less digits than its factorization.

31542205404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628517124 (or 2628517122 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 31542205404 its reverse (40450224513), we get a palindrome (71992429917).

The spelling of 31542205404 in words is "thirty-one billion, five hundred forty-two million, two hundred five thousand, four hundred four".