12312054 has 64 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 3896640.

The previous prime is 12312043. The next prime is 12312067. The reversal of 12312054 is 45021321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148297 + ... + 148379.

It is an arithmetic number, because the mean of its divisors is an integer number (449820).

Almost surely, 2^12312054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14394240).

12312054 is an abundant number, since it is smaller than the sum of its proper divisors (16476426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12312054 is a wasteful number, since it uses less digits than its factorization.

12312054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12312054 is about 3508.8536589604. The cubic root of 12312054 is about 230.9104054639.

Adding to 12312054 its reverse (45021321), we get a palindrome (57333375).

The spelling of 12312054 in words is "twelve million, three hundred twelve thousand, fifty-four".