2051231120 has 40 divisors (see below), whose sum is σ = 4798401216. Its totient is φ = 815453568.

The previous prime is 2051231093. The next prime is 2051231141. The reversal of 2051231120 is 211321502.

It is a happy number.

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

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, 65612 + ... + 91691.

Almost surely, 2^2051231120 is an apocalyptic number.

2051231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051231120 is an abundant number, since it is smaller than the sum of its proper divisors (2747170096).

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

2051231120 is a wasteful number, since it uses less digits than its factorization.

2051231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157479 (or 157473 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2051231120 is about 45290.5190961640. The cubic root of 2051231120 is about 1270.5883400475.

Adding to 2051231120 its reverse (211321502), we get a palindrome (2262552622).

The spelling of 2051231120 in words is "two billion, fifty-one million, two hundred thirty-one thousand, one hundred twenty".