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31368415741 = 132584193377
BaseRepresentation
bin11101001101101101…
…000000100111111101
32222222010012121212121
4131031231000213331
51003220303300431
622224354002541
72160224064055
oct351555004775
988863177777
1031368415741
1112337720033
1260b5276451
132c5ba35760
141738098565
15c38d30611
hex74db409fd

31368415741 has 8 divisors (see below), whose sum is σ = 33783039864. Its totient is φ = 28954030080.

The previous prime is 31368415739. The next prime is 31368415787. The reversal of 31368415741 is 14751486313.

It can be written as a sum of positive squares in 4 ways, for example, as 4047631641 + 27320784100 = 63621^2 + 165290^2 .

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 31368415741 - 21 = 31368415739 is a prime.

It is a super-2 number, since 2×313684157412 (a number of 22 digits) 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 (31368412741) 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, 289245 + ... + 382621.

It is an arithmetic number, because the mean of its divisors is an integer number (4222879983).

Almost surely, 231368415741 is an apocalyptic number.

It is an amenable number.

31368415741 is a deficient number, since it is larger than the sum of its proper divisors (2414624123).

31368415741 is a wasteful number, since it uses less digits than its factorization.

31368415741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119231.

The product of its digits is 241920, while the sum is 43.

The spelling of 31368415741 in words is "thirty-one billion, three hundred sixty-eight million, four hundred fifteen thousand, seven hundred forty-one".

Divisors: 1 13 25841 93377 335933 1213901 2412955057 31368415741