1036394631 has 6 divisors (see below), whose sum is σ = 1497014480. Its totient is φ = 690929748.

The previous prime is 1036394629. The next prime is 1036394687. The reversal of 1036394631 is 1364936301.

1036394631 is a `hidden beast` number, since 10 + 3 + 6 + 3 + 9 + 4 + 631 = 666.

It is not a de Polignac number, because 1036394631 - 2¹ = 1036394629 is a prime.

It is a super-3 number, since 3×1036394631³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1036394621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57577471 + ... + 57577488.

Almost surely, 2^1036394631 is an apocalyptic number.

1036394631 is a deficient number, since it is larger than the sum of its proper divisors (460619849).

1036394631 is a wasteful number, since it uses less digits than its factorization.

1036394631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115154965 (or 115154962 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 1036394631 is about 32193.0835894917. The cubic root of 1036394631 is about 1011.9872747414.

The spelling of 1036394631 in words is "one billion, thirty-six million, three hundred ninety-four thousand, six hundred thirty-one".