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31332030425 = 522415200337
BaseRepresentation
bin11101001011100010…
…001101011111011001
32222212120202001121022
4131023202031133121
51003131444433200
622221014052225
72156302602323
oct351342153731
988776661538
1031332030425
1112319129223
1260a504a075
132c54336297
141733306613
15c35a44885
hex74b88d7d9

31332030425 has 12 divisors (see below), whose sum is σ = 39012935676. Its totient is φ = 24961612800.

The previous prime is 31332030409. The next prime is 31332030437. The reversal of 31332030425 is 52403023313.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4758792256 + 26573238169 = 68984^2 + 163013^2 .

It is not a de Polignac number, because 31332030425 - 24 = 31332030409 is a prime.

It is a super-2 number, since 2×313320304252 (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 = 31332030394 and 31332030403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2594144 + ... + 2606193.

It is an arithmetic number, because the mean of its divisors is an integer number (3251077973).

Almost surely, 231332030425 is an apocalyptic number.

It is an amenable number.

31332030425 is a deficient number, since it is larger than the sum of its proper divisors (7680905251).

31332030425 is a wasteful number, since it uses less digits than its factorization.

31332030425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200588 (or 5200583 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 31332030425 its reverse (52403023313), we get a palindrome (83735053738).

The spelling of 31332030425 in words is "thirty-one billion, three hundred thirty-two million, thirty thousand, four hundred twenty-five".

Divisors: 1 5 25 241 1205 6025 5200337 26001685 130008425 1253281217 6266406085 31332030425