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30631048049 = 74375864007
BaseRepresentation
bin11100100001110000…
…001011001101110001
32221001201201110120002
4130201300023031301
51000213022014144
622023253355345
72133031420040
oct344160131561
987051643502
1030631048049
1111a99478848
125b2a338b55
132b72041a04
1416a8194557
15be422b14e
hex721c0b371

30631048049 has 4 divisors (see below), whose sum is σ = 35006912064. Its totient is φ = 26255184036.

The previous prime is 30631048043. The next prime is 30631048051. The reversal of 30631048049 is 94084013603.

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 30631048049 - 24 = 30631048033 is a prime.

It is a super-2 number, since 2×306310480492 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30631048043) 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, 2187931997 + ... + 2187932010.

It is an arithmetic number, because the mean of its divisors is an integer number (8751728016).

Almost surely, 230631048049 is an apocalyptic number.

It is an amenable number.

30631048049 is a deficient number, since it is larger than the sum of its proper divisors (4375864015).

30631048049 is an equidigital number, since it uses as much as digits as its factorization.

30631048049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375864014.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 30631048049 in words is "thirty billion, six hundred thirty-one million, forty-eight thousand, forty-nine".

Divisors: 1 7 4375864007 30631048049