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30972219623 = 367373922571
BaseRepresentation
bin11100110110000101…
…101001000011100111
32221221111200202222022
4130312011221003213
51001412342011443
622121202053355
72144343344252
oct346605510347
987844622868
1030972219623
1112154013024
12600464a25b
132bc7926697
1416db604099
15c1416de68
hex7361690e7

30972219623 has 8 divisors (see below), whose sum is σ = 31066295040. Its totient is φ = 30878197560.

The previous prime is 30972219581. The next prime is 30972219643. The reversal of 30972219623 is 32691227903.

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 30972219623 - 28 = 30972219367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972219643) 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, 1360928 + ... + 1383498.

It is an arithmetic number, because the mean of its divisors is an integer number (3883286880).

Almost surely, 230972219623 is an apocalyptic number.

30972219623 is a deficient number, since it is larger than the sum of its proper divisors (94075417).

30972219623 is a wasteful number, since it uses less digits than its factorization.

30972219623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26677.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 30972219623 in words is "thirty billion, nine hundred seventy-two million, two hundred nineteen thousand, six hundred twenty-three".

Divisors: 1 367 3739 22571 1372213 8283557 84392969 30972219623