1012120831 has 2 divisors, whose sum is σ = 1012120832. Its totient is φ = 1012120830.

The previous prime is 1012120783. The next prime is 1012120843. The reversal of 1012120831 is 1380212101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012120831 - 2¹³ = 1012112639 is a prime.

It is a super-2 number, since 2×1012120831² = 2048777153088261122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012120799 and 1012120808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012120871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506060415 + 506060416.

It is an arithmetic number, because the mean of its divisors is an integer number (506060416).

Almost surely, 2^1012120831 is an apocalyptic number.

1012120831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012120831 is an equidigital number, since it uses as much as digits as its factorization.

1012120831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1012120831 is about 31813.8465294595. The cubic root of 1012120831 is about 1004.0240622027.

Adding to 1012120831 its reverse (1380212101), we get a palindrome (2392332932).

The spelling of 1012120831 in words is "one billion, twelve million, one hundred twenty thousand, eight hundred thirty-one".