31144203011 has 2 divisors, whose sum is σ = 31144203012. Its totient is φ = 31144203010.

The previous prime is 31144202993. The next prime is 31144203023. The reversal of 31144203011 is 11030244113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31144203011 - 2¹⁴ = 31144186627 is a prime.

It is a super-2 number, since 2×31144203011² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31144283011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15572101505 + 15572101506.

It is an arithmetic number, because the mean of its divisors is an integer number (15572101506).

Almost surely, 2^31144203011 is an apocalyptic number.

31144203011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31144203011 is an equidigital number, since it uses as much as digits as its factorization.

31144203011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31144203011 its reverse (11030244113), we get a palindrome (42174447124).

The spelling of 31144203011 in words is "thirty-one billion, one hundred forty-four million, two hundred three thousand, eleven".