10938881531 has 2 divisors, whose sum is σ = 10938881532. Its totient is φ = 10938881530.

The previous prime is 10938881497. The next prime is 10938881537. The reversal of 10938881531 is 13518883901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10938881531 - 2¹⁸ = 10938619387 is a prime.

It is a super-2 number, since 2×10938881531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10938881537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5469440765 + 5469440766.

It is an arithmetic number, because the mean of its divisors is an integer number (5469440766).

Almost surely, 2^10938881531 is an apocalyptic number.

10938881531 is a deficient number, since it is larger than the sum of its proper divisors (1).

10938881531 is an equidigital number, since it uses as much as digits as its factorization.

10938881531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 10938881531 in words is "ten billion, nine hundred thirty-eight million, eight hundred eighty-one thousand, five hundred thirty-one".