2155142312 has 16 divisors (see below), whose sum is σ = 4050103200. Its totient is φ = 1075114800.

The previous prime is 2155142303. The next prime is 2155142321. The reversal of 2155142312 is 2132415512.

It is an interprime number because it is at equal distance from previous prime (2155142303) and next prime (2155142321).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303314 + ... + 310337.

It is an arithmetic number, because the mean of its divisors is an integer number (253131450).

Almost surely, 2^2155142312 is an apocalyptic number.

It is an amenable number.

2155142312 is a deficient number, since it is larger than the sum of its proper divisors (1894960888).

2155142312 is a wasteful number, since it uses less digits than its factorization.

2155142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614096 (or 614092 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 2155142312 is about 46423.5103368972. The cubic root of 2155142312 is about 1291.6910522782.

Adding to 2155142312 its reverse (2132415512), we get a palindrome (4287557824).

The spelling of 2155142312 in words is "two billion, one hundred fifty-five million, one hundred forty-two thousand, three hundred twelve".