102550431 has 8 divisors (see below), whose sum is σ = 137382784. Its totient is φ = 68042520.

The previous prime is 102550417. The next prime is 102550439. The reversal of 102550431 is 134055201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102550431 - 2⁶ = 102550367 is a prime.

It is a super-2 number, since 2×102550431² = 21033181796571522, 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 = 102550398 and 102550407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102550439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80371 + ... + 81636.

It is an arithmetic number, because the mean of its divisors is an integer number (17172848).

Almost surely, 2^102550431 is an apocalyptic number.

102550431 is a deficient number, since it is larger than the sum of its proper divisors (34832353).

102550431 is a wasteful number, since it uses less digits than its factorization.

102550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162221.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 102550431 is about 10126.7186689470. The cubic root of 102550431 is about 468.0718212880.

The spelling of 102550431 in words is "one hundred two million, five hundred fifty thousand, four hundred thirty-one".