102347481 has 4 divisors (see below), whose sum is σ = 136463312. Its totient is φ = 68231652.

The previous prime is 102347473. The next prime is 102347501. The reversal of 102347481 is 184743201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184743201 = 3 ⋅61581067.

It is not a de Polignac number, because 102347481 - 2³ = 102347473 is a prime.

It is a super-2 number, since 2×102347481² = 20950013734090722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102347681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17057911 + ... + 17057916.

It is an arithmetic number, because the mean of its divisors is an integer number (34115828).

Almost surely, 2^102347481 is an apocalyptic number.

It is an amenable number.

102347481 is a deficient number, since it is larger than the sum of its proper divisors (34115831).

102347481 is an equidigital number, since it uses as much as digits as its factorization.

102347481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34115830.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 102347481 is about 10116.6931850284. The cubic root of 102347481 is about 467.7628418907.

The spelling of 102347481 in words is "one hundred two million, three hundred forty-seven thousand, four hundred eighty-one".