31241205142 has 16 divisors (see below), whose sum is σ = 53965181952. Its totient is φ = 13286880360.

The previous prime is 31241205101. The next prime is 31241205157. The reversal of 31241205142 is 24150214213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8515398 + ... + 8519065.

It is an arithmetic number, because the mean of its divisors is an integer number (3372823872).

Almost surely, 2^31241205142 is an apocalyptic number.

31241205142 is a deficient number, since it is larger than the sum of its proper divisors (22723976810).

31241205142 is a wasteful number, since it uses less digits than its factorization.

31241205142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034603.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 31241205142 its reverse (24150214213), we get a palindrome (55391419355).

The spelling of 31241205142 in words is "thirty-one billion, two hundred forty-one million, two hundred five thousand, one hundred forty-two".