1020363131 has 4 divisors (see below), whose sum is σ = 1033279200. Its totient is φ = 1007447064.

The previous prime is 1020363101. The next prime is 1020363161. The reversal of 1020363131 is 1313630201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1020363101) and next prime (1020363161).

It is a cyclic number.

It is not a de Polignac number, because 1020363131 - 2⁶ = 1020363067 is a prime.

It is a super-2 number, since 2×1020363131² = 2082281838208246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020363101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457916 + ... + 6458073.

It is an arithmetic number, because the mean of its divisors is an integer number (258319800).

Almost surely, 2^1020363131 is an apocalyptic number.

1020363131 is a deficient number, since it is larger than the sum of its proper divisors (12916069).

1020363131 is an equidigital number, since it uses as much as digits as its factorization.

1020363131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916068.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1020363131 is about 31943.1233757753. The cubic root of 1020363131 is about 1006.7421515671.

Adding to 1020363131 its reverse (1313630201), we get a palindrome (2333993332).

The spelling of 1020363131 in words is "one billion, twenty million, three hundred sixty-three thousand, one hundred thirty-one".