102087131 has 2 divisors, whose sum is σ = 102087132. Its totient is φ = 102087130.

The previous prime is 102087119. The next prime is 102087151. The reversal of 102087131 is 131780201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102087131 - 2²² = 97892827 is a prime.

It is a super-2 number, since 2×102087131² = 20843564631622322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102087097 and 102087106.

It is not a weakly prime, because it can be changed into another prime (102087151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51043565 + 51043566.

It is an arithmetic number, because the mean of its divisors is an integer number (51043566).

Almost surely, 2^102087131 is an apocalyptic number.

102087131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102087131 is an equidigital number, since it uses as much as digits as its factorization.

102087131 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 square root of 102087131 is about 10103.8176448311. The cubic root of 102087131 is about 467.3658757145.

The spelling of 102087131 in words is "one hundred two million, eighty-seven thousand, one hundred thirty-one".