2131156801 has 2 divisors, whose sum is σ = 2131156802. Its totient is φ = 2131156800.

The previous prime is 2131156787. The next prime is 2131156813. The reversal of 2131156801 is 1086511312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1664640000 + 466516801 = 40800^2 + 21599^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131156801 - 2¹³ = 2131148609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131156801.

It is not a weakly prime, because it can be changed into another prime (2131156501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065578400 + 1065578401.

It is an arithmetic number, because the mean of its divisors is an integer number (1065578401).

Almost surely, 2^2131156801 is an apocalyptic number.

It is an amenable number.

2131156801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131156801 is an equidigital number, since it uses as much as digits as its factorization.

2131156801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 2131156801 is about 46164.4538687506. The cubic root of 2131156801 is about 1286.8812349063.

The spelling of 2131156801 in words is "two billion, one hundred thirty-one million, one hundred fifty-six thousand, eight hundred one".