102257831 has 8 divisors (see below), whose sum is σ = 110279904. Its totient is φ = 94258080.

The previous prime is 102257803. The next prime is 102257833. The reversal of 102257831 is 138752201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102257831 is a prime.

It is a super-2 number, since 2×102257831² = 20913328001649122, 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 = 102257794 and 102257803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102257833) 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, 4646 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (13784988).

Almost surely, 2^102257831 is an apocalyptic number.

102257831 is a deficient number, since it is larger than the sum of its proper divisors (8022073).

102257831 is a wasteful number, since it uses less digits than its factorization.

102257831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 102257831 is about 10112.2614186936. The cubic root of 102257831 is about 467.6262249837.

The spelling of 102257831 in words is "one hundred two million, two hundred fifty-seven thousand, eight hundred thirty-one".