1020225631 has 2 divisors, whose sum is σ = 1020225632. Its totient is φ = 1020225630.

The previous prime is 1020225623. The next prime is 1020225643. The reversal of 1020225631 is 1365220201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020225631 - 2³ = 1020225623 is a prime.

It is a super-2 number, since 2×1020225631² = 2081720676298696322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020225431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510112815 + 510112816.

It is an arithmetic number, because the mean of its divisors is an integer number (510112816).

Almost surely, 2^1020225631 is an apocalyptic number.

1020225631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020225631 is an equidigital number, since it uses as much as digits as its factorization.

1020225631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1020225631 is about 31940.9710403425. The cubic root of 1020225631 is about 1006.6969280384.

Adding to 1020225631 its reverse (1365220201), we get a palindrome (2385445832).

The spelling of 1020225631 in words is "one billion, twenty million, two hundred twenty-five thousand, six hundred thirty-one".