1012020031 has 4 divisors (see below), whose sum is σ = 1104021864. Its totient is φ = 920018200.

The previous prime is 1012020029. The next prime is 1012020043. The reversal of 1012020031 is 1300202101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012020031 - 2¹ = 1012020029 is a prime.

It is a super-2 number, since 2×1012020031² = 2048369086290481922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012020091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46000900 + ... + 46000921.

It is an arithmetic number, because the mean of its divisors is an integer number (276005466).

Almost surely, 2^1012020031 is an apocalyptic number.

1012020031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012020031 is a deficient number, since it is larger than the sum of its proper divisors (92001833).

1012020031 is an equidigital number, since it uses as much as digits as its factorization.

1012020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92001832.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1012020031 is about 31812.2622741609. The cubic root of 1012020031 is about 1003.9907298896.

Adding to 1012020031 its reverse (1300202101), we get a palindrome (2312222132).

The spelling of 1012020031 in words is "one billion, twelve million, twenty thousand, thirty-one".