1370631 has 4 divisors (see below), whose sum is σ = 1827512. Its totient is φ = 913752.

The previous prime is 1370623. The next prime is 1370657. The reversal of 1370631 is 1360731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1370631 - 2³ = 1370623 is a prime.

It is a super-2 number, since 2×1370631² = 3757258676322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1370598 and 1370607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370431) 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, 228436 + ... + 228441.

It is an arithmetic number, because the mean of its divisors is an integer number (456878).

2^1370631 is an apocalyptic number.

1370631 is a deficient number, since it is larger than the sum of its proper divisors (456881).

1370631 is an equidigital number, since it uses as much as digits as its factorization.

1370631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456880.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 1370631 is about 1170.7395098825. The cubic root of 1370631 is about 111.0811029704.

The spelling of 1370631 in words is "one million, three hundred seventy thousand, six hundred thirty-one".