31001201087 has 2 divisors, whose sum is σ = 31001201088. Its totient is φ = 31001201086.

The previous prime is 31001201069. The next prime is 31001201113. The reversal of 31001201087 is 78010210013.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31001201087 - 2¹⁶ = 31001135551 is a prime.

It is a super-2 number, since 2×31001201087² (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 (31001201027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500600543 + 15500600544.

It is an arithmetic number, because the mean of its divisors is an integer number (15500600544).

Almost surely, 2^31001201087 is an apocalyptic number.

31001201087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31001201087 is an equidigital number, since it uses as much as digits as its factorization.

31001201087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The spelling of 31001201087 in words is "thirty-one billion, one million, two hundred one thousand, eighty-seven".