1231541170 has 16 divisors (see below), whose sum is σ = 2223168768. Its totient is φ = 491195440.

The previous prime is 1231541159. The next prime is 1231541203. The reversal of 1231541170 is 711451321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173986 + ... + 180925.

It is an arithmetic number, because the mean of its divisors is an integer number (138948048).

Almost surely, 2^1231541170 is an apocalyptic number.

1231541170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231541170 is a deficient number, since it is larger than the sum of its proper divisors (991627598).

1231541170 is a wasteful number, since it uses less digits than its factorization.

1231541170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355265.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1231541170 is about 35093.3208744912. The cubic root of 1231541170 is about 1071.8885824139. Note that the first 3 decimals are identical.

Adding to 1231541170 its reverse (711451321), we get a palindrome (1942992491).

The spelling of 1231541170 in words is "one billion, two hundred thirty-one million, five hundred forty-one thousand, one hundred seventy".