2051331156 has 72 divisors (see below), whose sum is σ = 6145572160. Its totient is φ = 586092672.

The previous prime is 2051331103. The next prime is 2051331169. The reversal of 2051331156 is 6511331502.

It is a super-3 number, since 3×2051331156³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 143941 + ... + 157548.

Almost surely, 2^2051331156 is an apocalyptic number.

It is an amenable number.

2051331156 is an abundant number, since it is smaller than the sum of its proper divisors (4094241004).

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

2051331156 is a wasteful number, since it uses less digits than its factorization.

2051331156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301515 (or 301501 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 2051331156 is about 45291.6234639475. The cubic root of 2051331156 is about 1270.6089947180.

Adding to 2051331156 its reverse (6511331502), we get a palindrome (8562662658).

The spelling of 2051331156 in words is "two billion, fifty-one million, three hundred thirty-one thousand, one hundred fifty-six".