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30033232031 = 11231031152509
BaseRepresentation
bin11011111110000111…
…101100000010011111
32212112001211021011002
4123332013230002133
5443002001411111
621444100220515
72112152155145
oct337607540237
985461737132
1030033232031
1111811a81820
1259a209a73b
132aa822c21a
14164ca19595
15bab9e063b
hex6fe1ec09f

30033232031 has 16 divisors (see below), whose sum is σ = 34519979520. Its totient is φ = 25862279520.

The previous prime is 30033232007. The next prime is 30033232057. The reversal of 30033232031 is 13023233003.

It is not a de Polignac number, because 30033232031 - 26 = 30033231967 is a prime.

It is a super-2 number, since 2×300332320312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30033231994 and 30033232012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30033232091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550196 + ... + 602313.

It is an arithmetic number, because the mean of its divisors is an integer number (2157498720).

Almost surely, 230033232031 is an apocalyptic number.

30033232031 is a deficient number, since it is larger than the sum of its proper divisors (4486747489).

30033232031 is a wasteful number, since it uses less digits than its factorization.

30033232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152646.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30033232031 its product of nonzero digits (972), we get a palindrome (30033233003).

Adding to 30033232031 its reverse (13023233003), we get a palindrome (43056465034).

The spelling of 30033232031 in words is "thirty billion, thirty-three million, two hundred thirty-two thousand, thirty-one".

Divisors: 1 11 23 103 253 1133 2369 26059 1152509 12677599 26507707 118708427 291584777 1305792697 2730293821 30033232031