2135894931 has 72 divisors (see below), whose sum is σ = 3399252480. Its totient is φ = 1288964160.

The previous prime is 2135894911. The next prime is 2135894939. The reversal of 2135894931 is 1394985312.

It is a happy number.

2135894931 is a `hidden beast` number, since 21 + 3 + 589 + 49 + 3 + 1 = 666.

It is not a de Polignac number, because 2135894931 - 2¹⁷ = 2135763859 is a prime.

It is a super-2 number, since 2×2135894931² = 9124094312542989522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2135894939) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35014641 + ... + 35014701.

It is an arithmetic number, because the mean of its divisors is an integer number (47211840).

Almost surely, 2^2135894931 is an apocalyptic number.

2135894931 is a deficient number, since it is larger than the sum of its proper divisors (1263357549).

2135894931 is a wasteful number, since it uses less digits than its factorization.

2135894931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 193 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 2135894931 is about 46215.7433241098. The cubic root of 2135894931 is about 1287.8342224156.

The spelling of 2135894931 in words is "two billion, one hundred thirty-five million, eight hundred ninety-four thousand, nine hundred thirty-one".