1257623323 has 8 divisors (see below), whose sum is σ = 1384776000. Its totient is φ = 1132607880.

The previous prime is 1257623267. The next prime is 1257623329. The reversal of 1257623323 is 3233267521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1257623323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257623329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533073 + ... + 535426.

It is an arithmetic number, because the mean of its divisors is an integer number (173097000).

Almost surely, 2^1257623323 is an apocalyptic number.

1257623323 is a deficient number, since it is larger than the sum of its proper divisors (127152677).

1257623323 is a wasteful number, since it uses less digits than its factorization.

1257623323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068617.

The product of its digits is 45360, while the sum is 34.

The square root of 1257623323 is about 35462.9852522317. The cubic root of 1257623323 is about 1079.4027685048.

The spelling of 1257623323 in words is "one billion, two hundred fifty-seven million, six hundred twenty-three thousand, three hundred twenty-three".