1057730323 has 16 divisors (see below), whose sum is σ = 1237734400. Its totient is φ = 895134240.

The previous prime is 1057730321. The next prime is 1057730357. The reversal of 1057730323 is 3230377501.

It is not a de Polignac number, because 1057730323 - 2¹ = 1057730321 is a prime.

It is a super-2 number, since 2×1057730323² = 2237586872387368658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057730321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61413 + ... + 76726.

It is an arithmetic number, because the mean of its divisors is an integer number (77358400).

Almost surely, 2^1057730323 is an apocalyptic number.

1057730323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1057730323 is a deficient number, since it is larger than the sum of its proper divisors (180004077).

1057730323 is a wasteful number, since it uses less digits than its factorization.

1057730323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138202.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 1057730323 is about 32522.7662261377. The cubic root of 1057730323 is about 1018.8845691332.

The spelling of 1057730323 in words is "one billion, fifty-seven million, seven hundred thirty thousand, three hundred twenty-three".