98155431 has 24 divisors (see below), whose sum is σ = 155819664. Its totient is φ = 59045760.

The previous prime is 98155423. The next prime is 98155439. The reversal of 98155431 is 13455189.

It is an interprime number because it is at equal distance from previous prime (98155423) and next prime (98155439).

It is not a de Polignac number, because 98155431 - 2³ = 98155423 is a prime.

It is a super-5 number, since 5×98155431⁵ (a number of 41 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98155439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9945 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (6492486).

Almost surely, 2^98155431 is an apocalyptic number.

98155431 is a deficient number, since it is larger than the sum of its proper divisors (57664233).

98155431 is a wasteful number, since it uses less digits than its factorization.

98155431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391 (or 7388 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 98155431 is about 9907.3422773214. The cubic root of 98155431 is about 461.2872435611.

The spelling of 98155431 in words is "ninety-eight million, one hundred fifty-five thousand, four hundred thirty-one".