1102631 has 4 divisors (see below), whose sum is σ = 1107000. Its totient is φ = 1098264.

The previous prime is 1102583. The next prime is 1102663. The reversal of 1102631 is 1362011.

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

It is a cyclic number.

It is not a de Polignac number, because 1102631 - 2⁶ = 1102567 is a prime.

It is a super-2 number, since 2×1102631² = 2431590244322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102681) 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, 1781 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (276750).

2^1102631 is an apocalyptic number.

1102631 is a deficient number, since it is larger than the sum of its proper divisors (4369).

1102631 is an equidigital number, since it uses as much as digits as its factorization.

1102631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1102631 is about 1050.0623790995. The cubic root of 1102631 is about 103.3102468947.

Adding to 1102631 its reverse (1362011), we get a palindrome (2464642).

The spelling of 1102631 in words is "one million, one hundred two thousand, six hundred thirty-one".