31435742126 has 4 divisors (see below), whose sum is σ = 47153613192. Its totient is φ = 15717871062.

The previous prime is 31435742113. The next prime is 31435742147. The reversal of 31435742126 is 62124753413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62124753413 = 1777 ⋅34960469.

It is a self number, because there is not a number n which added to its sum of digits gives 31435742126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7858935530 + ... + 7858935533.

It is an arithmetic number, because the mean of its divisors is an integer number (11788403298).

Almost surely, 2^31435742126 is an apocalyptic number.

31435742126 is a deficient number, since it is larger than the sum of its proper divisors (15717871066).

31435742126 is a wasteful number, since it uses less digits than its factorization.

31435742126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15717871065.

The product of its digits is 120960, while the sum is 38.

The spelling of 31435742126 in words is "thirty-one billion, four hundred thirty-five million, seven hundred forty-two thousand, one hundred twenty-six".