2311556642 has 8 divisors (see below), whose sum is σ = 3471402396. Its totient is φ = 1154422512.

The previous prime is 2311556641. The next prime is 2311556651. The reversal of 2311556642 is 2466551132.

It can be written as a sum of positive squares in 2 ways, for example, as 2173517641 + 138039001 = 46621^2 + 11749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2311556641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675773 + ... + 679184.

Almost surely, 2^2311556642 is an apocalyptic number.

2311556642 is a deficient number, since it is larger than the sum of its proper divisors (1159845754).

2311556642 is a wasteful number, since it uses less digits than its factorization.

2311556642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355812.

The product of its digits is 43200, while the sum is 35.

The square root of 2311556642 is about 48078.6505842250. The cubic root of 2311556642 is about 1322.2132753197.

The spelling of 2311556642 in words is "two billion, three hundred eleven million, five hundred fifty-six thousand, six hundred forty-two".