2312220123 has 24 divisors (see below), whose sum is σ = 3420660672. Its totient is φ = 1504259568.

The previous prime is 2312220121. The next prime is 2312220139. The reversal of 2312220123 is 3210222132.

It is not a de Polignac number, because 2312220123 - 2¹ = 2312220121 is a prime.

It is a super-2 number, since 2×2312220123² = 10692723794412270258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2312220096 and 2312220105.

It is not an unprimeable number, because it can be changed into a prime (2312220121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587440 + ... + 591362.

It is an arithmetic number, because the mean of its divisors is an integer number (142527528).

Almost surely, 2^2312220123 is an apocalyptic number.

2312220123 is a deficient number, since it is larger than the sum of its proper divisors (1108440549).

2312220123 is a wasteful number, since it uses less digits than its factorization.

2312220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2312220123 is about 48085.5500436462. The cubic root of 2312220123 is about 1322.3397672041.

Adding to 2312220123 its reverse (3210222132), we get a palindrome (5522442255).

The spelling of 2312220123 in words is "two billion, three hundred twelve million, two hundred twenty thousand, one hundred twenty-three".