31036154381 has 2 divisors, whose sum is σ = 31036154382. Its totient is φ = 31036154380.

The previous prime is 31036154377. The next prime is 31036154449. The reversal of 31036154381 is 18345163013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27024072100 + 4012082281 = 164390^2 + 63341^2 .

It is a cyclic number.

It is not a de Polignac number, because 31036154381 - 2² = 31036154377 is a prime.

It is a super-2 number, since 2×31036154381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31036154081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15518077190 + 15518077191.

It is an arithmetic number, because the mean of its divisors is an integer number (15518077191).

Almost surely, 2^31036154381 is an apocalyptic number.

It is an amenable number.

31036154381 is a deficient number, since it is larger than the sum of its proper divisors (1).

31036154381 is an equidigital number, since it uses as much as digits as its factorization.

31036154381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 31036154381 in words is "thirty-one billion, thirty-six million, one hundred fifty-four thousand, three hundred eighty-one".