2051322531 has 8 divisors (see below), whose sum is σ = 2735974080. Its totient is φ = 1367109672.

The previous prime is 2051322499. The next prime is 2051322571. The reversal of 2051322531 is 1352231502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2051322531 - 2⁵ = 2051322499 is a prime.

It is a super-2 number, since 2×2051322531² = 8415848252376491922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2051322571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98601 + ... + 117578.

It is an arithmetic number, because the mean of its divisors is an integer number (341996760).

Almost surely, 2^2051322531 is an apocalyptic number.

2051322531 is a deficient number, since it is larger than the sum of its proper divisors (684651549).

2051322531 is a wasteful number, since it uses less digits than its factorization.

2051322531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219345.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2051322531 is about 45291.5282475652. The cubic root of 2051322531 is about 1270.6072139202.

The spelling of 2051322531 in words is "two billion, fifty-one million, three hundred twenty-two thousand, five hundred thirty-one".