311425023 has 32 divisors (see below), whose sum is σ = 541126656. Its totient is φ = 154603008.

The previous prime is 311425007. The next prime is 311425061. The reversal of 311425023 is 320524113.

It is not a de Polignac number, because 311425023 - 2⁴ = 311425007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311425003) 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, 28911 + ... + 38192.

It is an arithmetic number, because the mean of its divisors is an integer number (16910208).

Almost surely, 2^311425023 is an apocalyptic number.

311425023 is a deficient number, since it is larger than the sum of its proper divisors (229701633).

311425023 is a wasteful number, since it uses less digits than its factorization.

311425023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67143.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 311425023 is about 17647.2383958511. The cubic root of 311425023 is about 677.8253938170.

Adding to 311425023 its reverse (320524113), we get a palindrome (631949136).

The spelling of 311425023 in words is "three hundred eleven million, four hundred twenty-five thousand, twenty-three".