1231745052 has 48 divisors (see below), whose sum is σ = 2920603392. Its totient is φ = 403987200.

The previous prime is 1231745033. The next prime is 1231745071. The reversal of 1231745052 is 2505471321.

It is an interprime number because it is at equal distance from previous prime (1231745033) and next prime (1231745071).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190708 + ... + 197060.

It is an arithmetic number, because the mean of its divisors is an integer number (60845904).

Almost surely, 2^1231745052 is an apocalyptic number.

1231745052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231745052 is an abundant number, since it is smaller than the sum of its proper divisors (1688858340).

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

1231745052 is a wasteful number, since it uses less digits than its factorization.

1231745052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618 (or 6616 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1231745052 is about 35096.2256090310. The cubic root of 1231745052 is about 1071.9477296393.

The spelling of 1231745052 in words is "one billion, two hundred thirty-one million, seven hundred forty-five thousand, fifty-two".