1231110672 has 40 divisors (see below), whose sum is σ = 3469495200. Its totient is φ = 373063680.

The previous prime is 1231110667. The next prime is 1231110679. The reversal of 1231110672 is 2760111321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1231110679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165297 + ... + 1166352.

It is an arithmetic number, because the mean of its divisors is an integer number (86737380).

Almost surely, 2^1231110672 is an apocalyptic number.

1231110672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231110672 is an abundant number, since it is smaller than the sum of its proper divisors (2238384528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231110672 is a wasteful number, since it uses less digits than its factorization.

1231110672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331671 (or 2331665 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1231110672 is about 35087.1867210810. The cubic root of 1231110672 is about 1071.7636712646.

Adding to 1231110672 its reverse (2760111321), we get a palindrome (3991221993).

It can be divided in two parts, 123 and 1110672, that added together give a triangular number (1110795 = T₁₄₉₀).

The spelling of 1231110672 in words is "one billion, two hundred thirty-one million, one hundred ten thousand, six hundred seventy-two".