631249383 has 8 divisors (see below), whose sum is σ = 842032368. Its totient is φ = 420649664.

The previous prime is 631249379. The next prime is 631249393. The reversal of 631249383 is 383942136.

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

It is a cyclic number.

It is not a de Polignac number, because 631249383 - 2² = 631249379 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631249303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37566 + ... + 51707.

It is an arithmetic number, because the mean of its divisors is an integer number (105254046).

Almost surely, 2^631249383 is an apocalyptic number.

631249383 is a deficient number, since it is larger than the sum of its proper divisors (210782985).

631249383 is a wasteful number, since it uses less digits than its factorization.

631249383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91633.

The product of its digits is 93312, while the sum is 39.

The square root of 631249383 is about 25124.6767740403. The cubic root of 631249383 is about 857.8282063229.

The spelling of 631249383 in words is "six hundred thirty-one million, two hundred forty-nine thousand, three hundred eighty-three".