1231013570 has 16 divisors (see below), whose sum is σ = 2216289600. Its totient is φ = 492302064.

The previous prime is 1231013551. The next prime is 1231013593. The reversal of 1231013570 is 753101321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53219 + ... + 72761.

It is an arithmetic number, because the mean of its divisors is an integer number (138518100).

Almost surely, 2^1231013570 is an apocalyptic number.

1231013570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231013570 is a deficient number, since it is larger than the sum of its proper divisors (985276030).

1231013570 is a wasteful number, since it uses less digits than its factorization.

1231013570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25849.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1231013570 is about 35085.8029692923. The cubic root of 1231013570 is about 1071.7354926086.

Adding to 1231013570 its reverse (753101321), we get a palindrome (1984114891).

The spelling of 1231013570 in words is "one billion, two hundred thirty-one million, thirteen thousand, five hundred seventy".