1231601180 has 12 divisors (see below), whose sum is σ = 2586362520. Its totient is φ = 492640464.

The previous prime is 1231601131. The next prime is 1231601183. The reversal of 1231601180 is 811061321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231601183) 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, 30790010 + ... + 30790049.

It is an arithmetic number, because the mean of its divisors is an integer number (215530210).

Almost surely, 2^1231601180 is an apocalyptic number.

1231601180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231601180 is an abundant number, since it is smaller than the sum of its proper divisors (1354761340).

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

1231601180 is a wasteful number, since it uses less digits than its factorization.

1231601180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61580068 (or 61580066 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1231601180 is about 35094.1758700785. The cubic root of 1231601180 is about 1071.9059923040.

The spelling of 1231601180 in words is "one billion, two hundred thirty-one million, six hundred one thousand, one hundred eighty".