312220023 has 16 divisors (see below), whose sum is σ = 428747616. Its totient is φ = 201951360.

The previous prime is 312220019. The next prime is 312220031. The reversal of 312220023 is 320022213.

It is not a de Polignac number, because 312220023 - 2² = 312220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312219984 and 312220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220063) 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, 37633 + ... + 45173.

It is an arithmetic number, because the mean of its divisors is an integer number (26796726).

Almost surely, 2^312220023 is an apocalyptic number.

312220023 is a deficient number, since it is larger than the sum of its proper divisors (116527593).

312220023 is a wasteful number, since it uses less digits than its factorization.

312220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 312220023 is about 17669.7488097596. The cubic root of 312220023 is about 678.4016837289.

Adding to 312220023 its reverse (320022213), we get a palindrome (632242236).

The spelling of 312220023 in words is "three hundred twelve million, two hundred twenty thousand, twenty-three".