1011212431 has 2 divisors, whose sum is σ = 1011212432. Its totient is φ = 1011212430.

The previous prime is 1011212417. The next prime is 1011212443. The reversal of 1011212431 is 1342121101.

1011212431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011212431 - 2⁵ = 1011212399 is a prime.

It is a super-2 number, since 2×1011212431² = 2045101161217859522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011212401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505606215 + 505606216.

It is an arithmetic number, because the mean of its divisors is an integer number (505606216).

Almost surely, 2^1011212431 is an apocalyptic number.

1011212431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011212431 is an equidigital number, since it uses as much as digits as its factorization.

1011212431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1011212431 is about 31799.5665222028. The cubic root of 1011212431 is about 1003.7235946336.

Adding to 1011212431 its reverse (1342121101), we get a palindrome (2353333532).

The spelling of 1011212431 in words is "one billion, eleven million, two hundred twelve thousand, four hundred thirty-one".