631197812152 has 8 divisors (see below), whose sum is σ = 1183495897800. Its totient is φ = 315598906072.

The previous prime is 631197812131. The next prime is 631197812153. The reversal of 631197812152 is 251218791136.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×631197812152³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631197812153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39449863252 + ... + 39449863267.

It is an arithmetic number, because the mean of its divisors is an integer number (147936987225).

Almost surely, 2^631197812152 is an apocalyptic number.

It is an amenable number.

631197812152 is a deficient number, since it is larger than the sum of its proper divisors (552298085648).

631197812152 is a wasteful number, since it uses less digits than its factorization.

631197812152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78899726525 (or 78899726521 counting only the distinct ones).

The product of its digits is 181440, while the sum is 46.

The spelling of 631197812152 in words is "six hundred thirty-one billion, one hundred ninety-seven million, eight hundred twelve thousand, one hundred fifty-two".