1110661631 has 4 divisors (see below), whose sum is σ = 1110845232. Its totient is φ = 1110478032.

The previous prime is 1110661621. The next prime is 1110661637. The reversal of 1110661631 is 1361660111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1361660111 = 7 ⋅194522873.

It is a cyclic number.

It is not a de Polignac number, because 1110661631 - 2⁶ = 1110661567 is a prime.

It is a super-2 number, since 2×1110661631² = 2467138517151160322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1110661631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110661637) 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, 82406 + ... + 94931.

It is an arithmetic number, because the mean of its divisors is an integer number (277711308).

Almost surely, 2^1110661631 is an apocalyptic number.

1110661631 is a deficient number, since it is larger than the sum of its proper divisors (183601).

1110661631 is an equidigital number, since it uses as much as digits as its factorization.

1110661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183600.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1110661631 is about 33326.5904496695. The cubic root of 1110661631 is about 1035.6044858930.

The spelling of 1110661631 in words is "one billion, one hundred ten million, six hundred sixty-one thousand, six hundred thirty-one".