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10402010431 = 13241785591
BaseRepresentation
bin10011011000000001…
…00001010100111111
3222211221012212202121
421230000201110333
5132300403313211
64440103103411
7515525426011
oct115400412477
928757185677
1010402010431
11445873343a
122023741b67
13c9a083b77
147096cc1b1
1540d31c271
hex26c02153f

10402010431 has 4 divisors (see below), whose sum is σ = 10402809264. Its totient is φ = 10401211600.

The previous prime is 10402010347. The next prime is 10402010447. The reversal of 10402010431 is 13401020401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13401020401 = 59227135939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10402010431 is a prime.

It is a super-2 number, since 2×104020104312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402010461) 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, 379555 + ... + 406036.

It is an arithmetic number, because the mean of its divisors is an integer number (2600702316).

Almost surely, 210402010431 is an apocalyptic number.

10402010431 is a deficient number, since it is larger than the sum of its proper divisors (798833).

10402010431 is an equidigital number, since it uses as much as digits as its factorization.

10402010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798832.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10402010431 its reverse (13401020401), we get a palindrome (23803030832).

The spelling of 10402010431 in words is "ten billion, four hundred two million, ten thousand, four hundred thirty-one".

Divisors: 1 13241 785591 10402010431