631497 has 4 divisors (see below), whose sum is σ = 842000. Its totient is φ = 420996.

The previous prime is 631487. The next prime is 631507. The reversal of 631497 is 794136.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (631487) and next prime (631507).

It is not a de Polignac number, because 631497 - 2¹⁰ = 630473 is a prime.

It is a super-2 number, since 2×631497² = 797576922018, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631457) 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, 105247 + ... + 105252.

It is an arithmetic number, because the mean of its divisors is an integer number (210500).

2⁶³¹⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

631497 is a deficient number, since it is larger than the sum of its proper divisors (210503).

631497 is a wasteful number, since it uses less digits than its factorization.

631497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210502.

The product of its digits is 4536, while the sum is 30.

The square root of 631497 is about 794.6678551445. The cubic root of 631497 is about 85.7940356969.

It can be divided in two parts, 631 and 497, that added together give a triangular number (1128 = T₄₇).

The spelling of 631497 in words is "six hundred thirty-one thousand, four hundred ninety-seven".