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31450323401 = 7191291183167
BaseRepresentation
bin11101010010100101…
…011101100111001001
310000011211022222001122
4131102211131213021
51003402240322101
622240441325025
72162240223650
oct352245354711
9100154288048
1031450323401
1112379984512
126118796775
132c729b3223
141744cda197
15c4110e51b
hex75295d9c9

31450323401 has 16 divisors (see below), whose sum is σ = 37864488960. Its totient is φ = 25518687120.

The previous prime is 31450323383. The next prime is 31450323413. The reversal of 31450323401 is 10432305413.

It is a cyclic number.

It is not a de Polignac number, because 31450323401 - 214 = 31450307017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31450323451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80120 + ... + 263286.

It is an arithmetic number, because the mean of its divisors is an integer number (2366530560).

Almost surely, 231450323401 is an apocalyptic number.

It is an amenable number.

31450323401 is a deficient number, since it is larger than the sum of its proper divisors (6414165559).

31450323401 is a wasteful number, since it uses less digits than its factorization.

31450323401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184484.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31450323401 its reverse (10432305413), we get a palindrome (41882628814).

The spelling of 31450323401 in words is "thirty-one billion, four hundred fifty million, three hundred twenty-three thousand, four hundred one".

Divisors: 1 7 19 133 1291 9037 24529 171703 183167 1282169 3480173 24361211 236468597 1655280179 4492903343 31450323401