2136431511 has 8 divisors (see below), whose sum is σ = 3165083760. Its totient is φ = 1424287656.

The previous prime is 2136431471. The next prime is 2136431527. The reversal of 2136431511 is 1151346312.

It is a happy number.

2136431511 is a `hidden beast` number, since 2 + 1 + 3 + 643 + 1 + 5 + 11 = 666.

It is not a de Polignac number, because 2136431511 - 2¹⁵ = 2136398743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 79127093 = 2136431511 / (2 + 1 + 3 + 6 + 4 + 3 + 1 + 5 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136451511) 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, 39563520 + ... + 39563573.

It is an arithmetic number, because the mean of its divisors is an integer number (395635470).

Almost surely, 2^2136431511 is an apocalyptic number.

2136431511 is a deficient number, since it is larger than the sum of its proper divisors (1028652249).

2136431511 is an equidigital number, since it uses as much as digits as its factorization.

2136431511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79127102 (or 79127096 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 2136431511 is about 46221.5481242245. The cubic root of 2136431511 is about 1287.9420567194.

Adding to 2136431511 its reverse (1151346312), we get a palindrome (3287777823).

The spelling of 2136431511 in words is "two billion, one hundred thirty-six million, four hundred thirty-one thousand, five hundred eleven".