102939131 has 16 divisors (see below), whose sum is σ = 115155360. Its totient is φ = 91445760.

The previous prime is 102939121. The next prime is 102939139. The reversal of 102939131 is 131939201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102939131 is a prime.

It is a super-2 number, since 2×102939131² = 21192929382070322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102939094 and 102939103.

It is not an unprimeable number, because it can be changed into a prime (102939139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135605 + ... + 136361.

It is an arithmetic number, because the mean of its divisors is an integer number (7197210).

Almost surely, 2^102939131 is an apocalyptic number.

102939131 is a deficient number, since it is larger than the sum of its proper divisors (12216229).

102939131 is a wasteful number, since it uses less digits than its factorization.

102939131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 102939131 is about 10145.8923215260. The cubic root of 102939131 is about 468.6624579394.

The spelling of 102939131 in words is "one hundred two million, nine hundred thirty-nine thousand, one hundred thirty-one".