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408225031031 = 1921485527949
BaseRepresentation
bin1011111000011000001…
…10111010001101110111
31110000200220102020102202
411330030012322031313
523142021101443111
6511311435055115
741331124340216
oct5741406721567
91400626366382
10408225031031
11148144429a04
12671498a149b
132c659690acc
1415a886c707d
15a943a44b3b
hex5f0c1ba377

408225031031 has 4 divisors (see below), whose sum is σ = 429710559000. Its totient is φ = 386739503064.

The previous prime is 408225031007. The next prime is 408225031033. The reversal of 408225031031 is 130130522804.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 408225031031 - 226 = 408157922167 is a prime.

It is a super-2 number, since 2×4082250310312 (a number of 24 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 = 408225030985 and 408225031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408225031033) 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, 10742763956 + ... + 10742763993.

It is an arithmetic number, because the mean of its divisors is an integer number (107427639750).

Almost surely, 2408225031031 is an apocalyptic number.

408225031031 is a deficient number, since it is larger than the sum of its proper divisors (21485527969).

408225031031 is a wasteful number, since it uses less digits than its factorization.

408225031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21485527968.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 408225031031 its reverse (130130522804), we get a palindrome (538355553835).

The spelling of 408225031031 in words is "four hundred eight billion, two hundred twenty-five million, thirty-one thousand, thirty-one".

Divisors: 1 19 21485527949 408225031031