123898431 has 8 divisors (see below), whose sum is σ = 174915504. Its totient is φ = 77740160.

The previous prime is 123898429. The next prime is 123898483. The reversal of 123898431 is 134898321.

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

It is a cyclic number.

It is not a de Polignac number, because 123898431 - 2¹ = 123898429 is a prime.

It is a super-2 number, since 2×123898431² = 30701642408523522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123898431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123898231) 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, 1214640 + ... + 1214741.

It is an arithmetic number, because the mean of its divisors is an integer number (21864438).

Almost surely, 2^123898431 is an apocalyptic number.

123898431 is a deficient number, since it is larger than the sum of its proper divisors (51017073).

123898431 is a wasteful number, since it uses less digits than its factorization.

123898431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429401.

The product of its digits is 41472, while the sum is 39.

The square root of 123898431 is about 11130.9672086481. The cubic root of 123898431 is about 498.5269055812.

The spelling of 123898431 in words is "one hundred twenty-three million, eight hundred ninety-eight thousand, four hundred thirty-one".