1020252331 has 16 divisors (see below), whose sum is σ = 1288272384. Its totient is φ = 787273344.

The previous prime is 1020252287. The next prime is 1020252347. The reversal of 1020252331 is 1332520201.

It is a cyclic number.

It is not a de Polignac number, because 1020252331 - 2⁷ = 1020252203 is a prime.

It is a super-2 number, since 2×1020252331² = 2081829637821867122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020252299 and 1020252308.

It is not an unprimeable number, because it can be changed into a prime (1020252361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183645 + ... + 189118.

It is an arithmetic number, because the mean of its divisors is an integer number (80517024).

Almost surely, 2^1020252331 is an apocalyptic number.

1020252331 is a deficient number, since it is larger than the sum of its proper divisors (268020053).

1020252331 is a wasteful number, since it uses less digits than its factorization.

1020252331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372810.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1020252331 is about 31941.3889960972. The cubic root of 1020252331 is about 1006.7057099433.

Adding to 1020252331 its reverse (1332520201), we get a palindrome (2352772532).

The spelling of 1020252331 in words is "one billion, twenty million, two hundred fifty-two thousand, three hundred thirty-one".