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31214005045 = 57213865493
BaseRepresentation
bin11101000100011111…
…111110101100110101
32222120100122202012221
4131010133332230311
51002411241130140
622201200242341
72153340444106
oct350437765465
988510582187
1031214005045
1112268545a93
1260716103b1
132c35a51092
1417217823ad
15c2a4ce14a
hex7447feb35

31214005045 has 8 divisors (see below), whose sum is σ = 37462042296. Its totient is φ = 24967713216.

The previous prime is 31214005037. The next prime is 31214005051. The reversal of 31214005045 is 54050041213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7015402564 + 24198602481 = 83758^2 + 155559^2 .

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 31214005045 - 23 = 31214005037 is a prime.

It is a super-2 number, since 2×312140050452 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396682 + ... + 468811.

It is an arithmetic number, because the mean of its divisors is an integer number (4682755287).

Almost surely, 231214005045 is an apocalyptic number.

It is an amenable number.

31214005045 is a deficient number, since it is larger than the sum of its proper divisors (6248037251).

31214005045 is an equidigital number, since it uses as much as digits as its factorization.

31214005045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872711.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 31214005045 its reverse (54050041213), we get a palindrome (85264046258).

The spelling of 31214005045 in words is "thirty-one billion, two hundred fourteen million, five thousand, forty-five".

Divisors: 1 5 7213 36065 865493 4327465 6242801009 31214005045