631401424 has 10 divisors (see below), whose sum is σ = 1223340290. Its totient is φ = 315700704.

The previous prime is 631401413. The next prime is 631401439. The reversal of 631401424 is 424104136.

It can be written as a sum of positive squares in only one way, i.e., 598683024 + 32718400 = 24468^2 + 5720^2 .

It is a super-4 number, since 4×631401424⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19731279 + ... + 19731310.

It is an arithmetic number, because the mean of its divisors is an integer number (122334029).

Almost surely, 2^631401424 is an apocalyptic number.

It is an amenable number.

631401424 is a deficient number, since it is larger than the sum of its proper divisors (591938866).

631401424 is a wasteful number, since it uses less digits than its factorization.

631401424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39462597 (or 39462591 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 631401424 is about 25127.7023223374. The cubic root of 631401424 is about 857.8970721795.

The spelling of 631401424 in words is "six hundred thirty-one million, four hundred one thousand, four hundred twenty-four".