2155431114 has 32 divisors (see below), whose sum is σ = 4794456000. Its totient is φ = 717785712.

The previous prime is 2155431077. The next prime is 2155431121. The reversal of 2155431114 is 4111345512.

2155431114 is a `hidden beast` number, since 2 + 1 + 5 + 543 + 1 + 114 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39057 + ... + 76395.

It is an arithmetic number, because the mean of its divisors is an integer number (149826750).

Almost surely, 2^2155431114 is an apocalyptic number.

2155431114 is an abundant number, since it is smaller than the sum of its proper divisors (2639024886).

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

2155431114 is a wasteful number, since it uses less digits than its factorization.

2155431114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38419 (or 38413 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 2155431114 is about 46426.6207471532. The cubic root of 2155431114 is about 1291.7487478180.

Adding to 2155431114 its reverse (4111345512), we get a palindrome (6266776626).

The spelling of 2155431114 in words is "two billion, one hundred fifty-five million, four hundred thirty-one thousand, one hundred fourteen".