31012201039 has 2 divisors, whose sum is σ = 31012201040. Its totient is φ = 31012201038.

The previous prime is 31012201013. The next prime is 31012201049. The reversal of 31012201039 is 93010221013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31012201039 is a prime.

It is a super-3 number, since 3×31012201039³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31012201049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506100519 + 15506100520.

It is an arithmetic number, because the mean of its divisors is an integer number (15506100520).

Almost surely, 2^31012201039 is an apocalyptic number.

31012201039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012201039 is an equidigital number, since it uses as much as digits as its factorization.

31012201039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 31012201039 in words is "thirty-one billion, twelve million, two hundred one thousand, thirty-nine".