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31454245541 = 157277723269
BaseRepresentation
bin11101010010110100…
…011011001010100101
310000012002201020020002
4131102310123022211
51003404241324131
622241101351045
72162315450525
oct352264331245
9100162636202
1031454245541
1112381113254
126119b68485
132c73757514
14174563b685
15c416366cb
hex752d1b2a5

31454245541 has 8 divisors (see below), whose sum is σ = 31768911480. Its totient is φ = 31141027008.

The previous prime is 31454245519. The next prime is 31454245547. The reversal of 31454245541 is 14554245413.

It can be written as a sum of positive squares in 4 ways, for example, as 3279280225 + 28174965316 = 57265^2 + 167854^2 .

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 31454245541 - 218 = 31453983397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31454245495 and 31454245504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454245547) 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, 318146 + ... + 405123.

It is an arithmetic number, because the mean of its divisors is an integer number (3971113935).

Almost surely, 231454245541 is an apocalyptic number.

It is an amenable number.

31454245541 is a deficient number, since it is larger than the sum of its proper divisors (314665939).

31454245541 is a wasteful number, since it uses less digits than its factorization.

31454245541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723703.

The product of its digits is 192000, while the sum is 38.

The spelling of 31454245541 in words is "thirty-one billion, four hundred fifty-four million, two hundred forty-five thousand, five hundred forty-one".

Divisors: 1 157 277 43489 723269 113553233 200345513 31454245541