1021650312 has 16 divisors (see below), whose sum is σ = 2554125840. Its totient is φ = 340550096.

The previous prime is 1021650307. The next prime is 1021650323. The reversal of 1021650312 is 2130561201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21284358 + ... + 21284405.

It is an arithmetic number, because the mean of its divisors is an integer number (159632865).

Almost surely, 2^1021650312 is an apocalyptic number.

1021650312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021650312 is an abundant number, since it is smaller than the sum of its proper divisors (1532475528).

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

1021650312 is a wasteful number, since it uses less digits than its factorization.

1021650312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42568772 (or 42568768 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1021650312 is about 31963.2650397296. The cubic root of 1021650312 is about 1007.1653064244.

The spelling of 1021650312 in words is "one billion, twenty-one million, six hundred fifty thousand, three hundred twelve".