631027320 has 256 divisors, whose sum is σ = 2437447680. Its totient is φ = 126835200.

The previous prime is 631027307. The next prime is 631027321. The reversal of 631027320 is 23720136.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631027321) 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, 285339 + ... + 287541.

It is an arithmetic number, because the mean of its divisors is an integer number (9521280).

Almost surely, 2^631027320 is an apocalyptic number.

631027320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631027320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218723840).

631027320 is an abundant number, since it is smaller than the sum of its proper divisors (1806420360).

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

631027320 is a wasteful number, since it uses less digits than its factorization.

631027320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 631027320 is about 25120.2571642887. The cubic root of 631027320 is about 857.7276046422.

Adding to 631027320 its reverse (23720136), we get a palindrome (654747456).

The spelling of 631027320 in words is "six hundred thirty-one million, twenty-seven thousand, three hundred twenty".