2311662420 has 72 divisors (see below), whose sum is σ = 7023012360. Its totient is φ = 615479040.

The previous prime is 2311662407. The next prime is 2311662461. The reversal of 2311662420 is 242661132.

2311662420 is a `hidden beast` number, since 2 + 3 + 1 + 16 + 624 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 34082244 + 2277580176 = 5838^2 + 47724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109266 + ... + 128694.

Almost surely, 2^2311662420 is an apocalyptic number.

2311662420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311662420 is an abundant number, since it is smaller than the sum of its proper divisors (4711349940).

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

2311662420 is a wasteful number, since it uses less digits than its factorization.

2311662420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20105 (or 20100 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2311662420 is about 48079.7506233133. The cubic root of 2311662420 is about 1322.2334433946.

It can be divided in two parts, 231166 and 2420, that added together give a triangular number (233586 = T₆₈₃).

The spelling of 2311662420 in words is "two billion, three hundred eleven million, six hundred sixty-two thousand, four hundred twenty".