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98957431 = 2313213257
BaseRepresentation
bin1011110010111…
…11100001110111
320220012120002001
411321133201313
5200313114211
613453000131
72311060426
oct571374167
9226176061
1098957431
115094a201
1229183047
131766a0c1
14d1dd2bd
158a4aac1
hex5e5f877

98957431 has 8 divisors (see below), whose sum is σ = 103369824. Its totient is φ = 94554240.

The previous prime is 98957423. The next prime is 98957437. The reversal of 98957431 is 13475989.

It is a happy number.

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 98957431 - 23 = 98957423 is a prime.

It is a super-2 number, since 2×989574312 = 19585146300239522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98957437) 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, 28755 + ... + 32011.

It is an arithmetic number, because the mean of its divisors is an integer number (12921228).

Almost surely, 298957431 is an apocalyptic number.

98957431 is the 6292-nd centered pentagonal number.

98957431 is a deficient number, since it is larger than the sum of its proper divisors (4412393).

98957431 is a wasteful number, since it uses less digits than its factorization.

98957431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601.

The product of its digits is 272160, while the sum is 46.

The square root of 98957431 is about 9947.7349683232. The cubic root of 98957431 is about 462.5401860383.

The spelling of 98957431 in words is "ninety-eight million, nine hundred fifty-seven thousand, four hundred thirty-one".

Divisors: 1 23 1321 3257 30383 74911 4302497 98957431