1231770057 has 32 divisors (see below), whose sum is σ = 1998028800. Its totient is φ = 659311488.

The previous prime is 1231770017. The next prime is 1231770061. The reversal of 1231770057 is 7500771321.

It is not a de Polignac number, because 1231770057 - 2⁶ = 1231769993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231770017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18168 + ... + 52854.

It is an arithmetic number, because the mean of its divisors is an integer number (62438400).

Almost surely, 2^1231770057 is an apocalyptic number.

It is an amenable number.

1231770057 is a deficient number, since it is larger than the sum of its proper divisors (766258743).

1231770057 is a wasteful number, since it uses less digits than its factorization.

1231770057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34805.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 1231770057 is about 35096.5818421111. The cubic root of 1231770057 is about 1071.9549832701.

The spelling of 1231770057 in words is "one billion, two hundred thirty-one million, seven hundred seventy thousand, fifty-seven".