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31060703449 = 109128469939
BaseRepresentation
bin11100111011010111…
…001011100011011001
32222011200012012222001
4130323113023203121
51002103020002244
622134042401001
72146466423506
oct347327134331
988150165861
1031060703449
1112199a59256
12602a200161
132c10067489
1417092784ad
15c1bceb5d4
hex73b5cb8d9

31060703449 has 4 divisors (see below), whose sum is σ = 31089174480. Its totient is φ = 31032232420.

The previous prime is 31060703447. The next prime is 31060703507. The reversal of 31060703449 is 94430706013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31060703449 - 21 = 31060703447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31060703447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14233879 + ... + 14236060.

It is an arithmetic number, because the mean of its divisors is an integer number (7772293620).

Almost surely, 231060703449 is an apocalyptic number.

It is an amenable number.

31060703449 is a deficient number, since it is larger than the sum of its proper divisors (28471031).

31060703449 is a wasteful number, since it uses less digits than its factorization.

31060703449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28471030.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 31060703449 in words is "thirty-one billion, sixty million, seven hundred three thousand, four hundred forty-nine".

Divisors: 1 1091 28469939 31060703449