1011321131 has 2 divisors, whose sum is σ = 1011321132. Its totient is φ = 1011321130.

The previous prime is 1011321119. The next prime is 1011321133. The reversal of 1011321131 is 1311231101.

It is a happy number.

1011321131 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 1011321131 - 2⁶ = 1011321067 is a prime.

It is a super-2 number, since 2×1011321131² = 2045540860014238322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1011321133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1011321133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505660565 + 505660566.

It is an arithmetic number, because the mean of its divisors is an integer number (505660566).

Almost surely, 2^1011321131 is an apocalyptic number.

1011321131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011321131 is an equidigital number, since it uses as much as digits as its factorization.

1011321131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1011321131 is about 31801.2756190691. The cubic root of 1011321131 is about 1003.7595583415.

Adding to 1011321131 its reverse (1311231101), we get a palindrome (2322552232).

The spelling of 1011321131 in words is "one billion, eleven million, three hundred twenty-one thousand, one hundred thirty-one".