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672431123 = 7137389353
BaseRepresentation
bin101000000101000…
…111110000010011
31201212022001002102
4220011013300103
52334120243443
6150420311015
722443366410
oct5005076023
91655261072
10672431123
1131562a501
1216924246b
13a9408b50
146543d107
153e078cb8
hex28147c13

672431123 has 8 divisors (see below), whose sum is σ = 827607648. Its totient is φ = 532033344.

The previous prime is 672431117. The next prime is 672431129. The reversal of 672431123 is 321134276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (672431117) and next prime (672431129).

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 672431123 - 218 = 672168979 is a prime.

It is a super-2 number, since 2×6724311232 = 904327230358082258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (672431129) 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, 3694586 + ... + 3694767.

It is an arithmetic number, because the mean of its divisors is an integer number (103450956).

Almost surely, 2672431123 is an apocalyptic number.

672431123 is a deficient number, since it is larger than the sum of its proper divisors (155176525).

672431123 is a wasteful number, since it uses less digits than its factorization.

672431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7389373.

The product of its digits is 6048, while the sum is 29.

The square root of 672431123 is about 25931.2769257513. The cubic root of 672431123 is about 876.0911005768.

Adding to 672431123 its reverse (321134276), we get a palindrome (993565399).

The spelling of 672431123 in words is "six hundred seventy-two million, four hundred thirty-one thousand, one hundred twenty-three".

Divisors: 1 7 13 91 7389353 51725471 96061589 672431123