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316148473631 = 1916639393349
BaseRepresentation
bin1001001100110111110…
…10101101111100011111
31010020000221010111002002
410212123322231330133
520134433002124011
6401123034552515
731561311454364
oct4463372557437
91106027114062
10316148473631
11112094631581
125133159873b
1323a7459b053
1411431ac246b
158355231c3b
hex499beadf1f

316148473631 has 4 divisors (see below), whose sum is σ = 332787867000. Its totient is φ = 299509080264.

The previous prime is 316148473609. The next prime is 316148473633. The reversal of 316148473631 is 136374841613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136374841613 = 490327814571.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-316148473631 is a prime.

It is a super-2 number, since 2×3161484736312 (a number of 24 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 (316148473633) 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, 8319696656 + ... + 8319696693.

It is an arithmetic number, because the mean of its divisors is an integer number (83196966750).

Almost surely, 2316148473631 is an apocalyptic number.

316148473631 is a deficient number, since it is larger than the sum of its proper divisors (16639393369).

316148473631 is a wasteful number, since it uses less digits than its factorization.

316148473631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16639393368.

The product of its digits is 870912, while the sum is 47.

The spelling of 316148473631 in words is "three hundred sixteen billion, one hundred forty-eight million, four hundred seventy-three thousand, six hundred thirty-one".

Divisors: 1 19 16639393349 316148473631