631241331 has 32 divisors (see below), whose sum is σ = 1025395200. Its totient is φ = 337184256.

The previous prime is 631241329. The next prime is 631241339. The reversal of 631241331 is 133142136.

It is a happy number.

It is not a de Polignac number, because 631241331 - 2¹ = 631241329 is a prime.

It is a super-2 number, since 2×631241331² = 796931235925303122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631241339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47260 + ... + 59126.

It is an arithmetic number, because the mean of its divisors is an integer number (32043600).

Almost surely, 2^631241331 is an apocalyptic number.

631241331 is a deficient number, since it is larger than the sum of its proper divisors (394153869).

631241331 is a wasteful number, since it uses less digits than its factorization.

631241331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12043.

The product of its digits is 1296, while the sum is 24.

The square root of 631241331 is about 25124.5165326619. The cubic root of 631241331 is about 857.8245589202.

Adding to 631241331 its reverse (133142136), we get a palindrome (764383467).

The spelling of 631241331 in words is "six hundred thirty-one million, two hundred forty-one thousand, three hundred thirty-one".