2890400131 has 4 divisors (see below), whose sum is σ = 2931110064. Its totient is φ = 2849690200.

The previous prime is 2890400119. The next prime is 2890400141. The reversal of 2890400131 is 1310040982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310040982 = 2 ⋅655020491.

It is a cyclic number.

It is not a de Polignac number, because 2890400131 - 2¹⁹ = 2889875843 is a prime.

It is a super-2 number, since 2×2890400131² = 16708825834569634322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2890400131.

It is not an unprimeable number, because it can be changed into a prime (2890400141) 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, 20354860 + ... + 20355001.

It is an arithmetic number, because the mean of its divisors is an integer number (732777516).

Almost surely, 2^2890400131 is an apocalyptic number.

2890400131 is a deficient number, since it is larger than the sum of its proper divisors (40709933).

2890400131 is an equidigital number, since it uses as much as digits as its factorization.

2890400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40709932.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2890400131 is about 53762.4416391220. The cubic root of 2890400131 is about 1424.4678642627.

The spelling of 2890400131 in words is "two billion, eight hundred ninety million, four hundred thousand, one hundred thirty-one".