31300022142 has 12 divisors (see below), whose sum is σ = 67816714680. Its totient is φ = 10433340708.

The previous prime is 31300022111. The next prime is 31300022207. The reversal of 31300022142 is 24122000313.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1738890119 = 31300022142 / (3 + 1 + 3 + 0 + 0 + 0 + 2 + 2 + 1 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869445042 + ... + 869445077.

It is an arithmetic number, because the mean of its divisors is an integer number (5651392890).

Almost surely, 2^31300022142 is an apocalyptic number.

31300022142 is an abundant number, since it is smaller than the sum of its proper divisors (36516692538).

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

31300022142 is a wasteful number, since it uses less digits than its factorization.

31300022142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738890127 (or 1738890124 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31300022142 its reverse (24122000313), we get a palindrome (55422022455).

The spelling of 31300022142 in words is "thirty-one billion, three hundred million, twenty-two thousand, one hundred forty-two".