631712929942 has 4 divisors (see below), whose sum is σ = 947569394916. Its totient is φ = 315856464970.

The previous prime is 631712929933. The next prime is 631712929951. The reversal of 631712929942 is 249929217136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (631712929933) and next prime (631712929951).

It is a super-2 number, since 2×631712929942² (a number of 24 digits) contains 22 as substring.

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, 157928232484 + ... + 157928232487.

It is an arithmetic number, because the mean of its divisors is an integer number (236892348729).

Almost surely, 2^631712929942 is an apocalyptic number.

631712929942 is a deficient number, since it is larger than the sum of its proper divisors (315856464974).

631712929942 is a wasteful number, since it uses less digits than its factorization.

631712929942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315856464973.

The product of its digits is 2939328, while the sum is 55.

The spelling of 631712929942 in words is "six hundred thirty-one billion, seven hundred twelve million, nine hundred twenty-nine thousand, nine hundred forty-two".