631251055 has 8 divisors (see below), whose sum is σ = 802060272. Its totient is φ = 475294848.

The previous prime is 631251013. The next prime is 631251097. The reversal of 631251055 is 550152136.

It is an interprime number because it is at equal distance from previous prime (631251013) and next prime (631251097).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631251055 is a prime.

It is a super-2 number, since 2×631251055² = 796955788877226050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3713157 + ... + 3713326.

It is an arithmetic number, because the mean of its divisors is an integer number (100257534).

Almost surely, 2^631251055 is an apocalyptic number.

631251055 is a deficient number, since it is larger than the sum of its proper divisors (170809217).

631251055 is a wasteful number, since it uses less digits than its factorization.

631251055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426505.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 631251055 is about 25124.7100480782. The cubic root of 631251055 is about 857.8289637032.

The spelling of 631251055 in words is "six hundred thirty-one million, two hundred fifty-one thousand, fifty-five".