945631 has 2 divisors, whose sum is σ = 945632. Its totient is φ = 945630.

The previous prime is 945629. The next prime is 945647. The reversal of 945631 is 136549.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 945631 - 2¹ = 945629 is a prime.

It is a super-2 number, since 2×945631² = 1788435976322, which contains 22 as substring.

Together with 945629, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 945631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472815 + 472816.

It is an arithmetic number, because the mean of its divisors is an integer number (472816).

2⁹⁴⁵⁶³¹ is an apocalyptic number.

945631 is a deficient number, since it is larger than the sum of its proper divisors (1).

945631 is an equidigital number, since it uses as much as digits as its factorization.

945631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 945631 is about 972.4356019809. The cubic root of 945631 is about 98.1538261692.

The spelling of 945631 in words is "nine hundred forty-five thousand, six hundred thirty-one".