2151313040 has 40 divisors (see below), whose sum is σ = 5006217528. Its totient is φ = 859765760.

The previous prime is 2151313039. The next prime is 2151313051. The reversal of 2151313040 is 403131512.

It can be written as a sum of positive squares in 4 ways, for example, as 469328896 + 1681984144 = 21664^2 + 41012^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84170 + ... + 106710.

Almost surely, 2^2151313040 is an apocalyptic number.

2151313040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151313040 is an abundant number, since it is smaller than the sum of its proper divisors (2854904488).

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

2151313040 is a wasteful number, since it uses less digits than its factorization.

2151313040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23747 (or 23741 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2151313040 is about 46382.2491908273. The cubic root of 2151313040 is about 1290.9255701490.

Adding to 2151313040 its reverse (403131512), we get a palindrome (2554444552).

The spelling of 2151313040 in words is "two billion, one hundred fifty-one million, three hundred thirteen thousand, forty".