631280049 has 4 divisors (see below), whose sum is σ = 841706736. Its totient is φ = 420853364.

The previous prime is 631280047. The next prime is 631280087. The reversal of 631280049 is 940082136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631280049 - 2¹ = 631280047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631280047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105213339 + ... + 105213344.

It is an arithmetic number, because the mean of its divisors is an integer number (210426684).

Almost surely, 2^631280049 is an apocalyptic number.

It is an amenable number.

631280049 is a deficient number, since it is larger than the sum of its proper divisors (210426687).

631280049 is a wasteful number, since it uses less digits than its factorization.

631280049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210426686.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 631280049 is about 25125.2870431364. The cubic root of 631280049 is about 857.8420971530.

The spelling of 631280049 in words is "six hundred thirty-one million, two hundred eighty thousand, forty-nine".