102031949 has 2 divisors, whose sum is σ = 102031950. Its totient is φ = 102031948.

The previous prime is 102031939. The next prime is 102031961. The reversal of 102031949 is 949130201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60171049 + 41860900 = 7757^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 102031949 - 2⁸ = 102031693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102031939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51015974 + 51015975.

It is an arithmetic number, because the mean of its divisors is an integer number (51015975).

Almost surely, 2^102031949 is an apocalyptic number.

It is an amenable number.

102031949 is a deficient number, since it is larger than the sum of its proper divisors (1).

102031949 is an equidigital number, since it uses as much as digits as its factorization.

102031949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 102031949 is about 10101.0865257159. The cubic root of 102031949 is about 467.2816508249.

The spelling of 102031949 in words is "one hundred two million, thirty-one thousand, nine hundred forty-nine".