20142312 has 32 divisors (see below), whose sum is σ = 51982080. Its totient is φ = 6497280.

The previous prime is 20142307. The next prime is 20142313. The reversal of 20142312 is 21324102.

It is a super-3 number, since 3×20142312³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20142291 and 20142300.

It is not an unprimeable number, because it can be changed into a prime (20142313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12793 + ... + 14280.

It is an arithmetic number, because the mean of its divisors is an integer number (1624440).

Almost surely, 2^20142312 is an apocalyptic number.

It is an amenable number.

20142312 is an abundant number, since it is smaller than the sum of its proper divisors (31839768).

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

20142312 is a wasteful number, since it uses less digits than its factorization.

20142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27113 (or 27109 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20142312 is about 4488.0187165385. The cubic root of 20142312 is about 272.0840642702.

Adding to 20142312 its reverse (21324102), we get a palindrome (41466414).

The spelling of 20142312 in words is "twenty million, one hundred forty-two thousand, three hundred twelve".