631197812153 has 2 divisors, whose sum is σ = 631197812154. Its totient is φ = 631197812152.

The previous prime is 631197812131. The next prime is 631197812183. The reversal of 631197812153 is 351218791136.

631197812153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604245038224 + 26952773929 = 777332^2 + 164173^2 .

It is a cyclic number.

It is not a de Polignac number, because 631197812153 - 2¹⁶ = 631197746617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631197812098 and 631197812107.

It is not a weakly prime, because it can be changed into another prime (631197812183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315598906076 + 315598906077.

It is an arithmetic number, because the mean of its divisors is an integer number (315598906077).

Almost surely, 2^631197812153 is an apocalyptic number.

It is an amenable number.

631197812153 is a deficient number, since it is larger than the sum of its proper divisors (1).

631197812153 is an equidigital number, since it uses as much as digits as its factorization.

631197812153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The spelling of 631197812153 in words is "six hundred thirty-one billion, one hundred ninety-seven million, eight hundred twelve thousand, one hundred fifty-three".