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431253131 = 15111532477
BaseRepresentation
bin11001101101000…
…110011010001011
31010001110221002012
4121231012122023
51340400100011
6110443130135
713454406521
oct3155063213
91101427065
10431253131
11201481951
1210051394b
136b464a8a
14413bc311
1527cd8a8b
hex19b4668b

431253131 has 8 divisors (see below), whose sum is σ = 434661024. Its totient is φ = 427852800.

The previous prime is 431253107. The next prime is 431253139. The reversal of 431253131 is 131352134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-431253131 is a prime.

It is a super-2 number, since 2×4312531312 = 371958525994606322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431253097 and 431253106.

It is not an unprimeable number, because it can be changed into a prime (431253139) 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, 172865 + ... + 175341.

It is an arithmetic number, because the mean of its divisors is an integer number (54332628).

Almost surely, 2431253131 is an apocalyptic number.

431253131 is a deficient number, since it is larger than the sum of its proper divisors (3407893).

431253131 is a wasteful number, since it uses less digits than its factorization.

431253131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781.

The product of its digits is 1080, while the sum is 23.

The square root of 431253131 is about 20766.6350427796. The cubic root of 431253131 is about 755.5167323533.

The spelling of 431253131 in words is "four hundred thirty-one million, two hundred fifty-three thousand, one hundred thirty-one".

Divisors: 1 151 1153 2477 174103 374027 2855981 431253131