31020002100149 has 2 divisors, whose sum is σ = 31020002100150. Its totient is φ = 31020002100148.

The previous prime is 31020002100097. The next prime is 31020002100221. The reversal of 31020002100149 is 94100120002013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30140176860049 + 879825240100 = 5490007^2 + 937990^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020002100149 - 2³² = 31015707132853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020002100349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510001050074 + 15510001050075.

It is an arithmetic number, because the mean of its divisors is an integer number (15510001050075).

Almost surely, 2^{31020002100149} is an apocalyptic number.

It is an amenable number.

31020002100149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020002100149 is an equidigital number, since it uses as much as digits as its factorization.

31020002100149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 31020002100149 in words is "thirty-one trillion, twenty billion, two million, one hundred thousand, one hundred forty-nine".