631261092 has 192 divisors, whose sum is σ = 1982453760. Its totient is φ = 151372800.

The previous prime is 631261039. The next prime is 631261093. The reversal of 631261092 is 290162136.

It is not an unprimeable number, because it can be changed into a prime (631261093) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 719358 + ... + 720234.

It is an arithmetic number, because the mean of its divisors is an integer number (10325280).

Almost surely, 2^631261092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631261092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991226880).

631261092 is an abundant number, since it is smaller than the sum of its proper divisors (1351192668).

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

631261092 is a wasteful number, since it uses less digits than its factorization.

631261092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 631261092 is about 25124.9097908828. The cubic root of 631261092 is about 857.8335102216.

The spelling of 631261092 in words is "six hundred thirty-one million, two hundred sixty-one thousand, ninety-two".