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31142341001 = 191639070579
BaseRepresentation
bin11101000000001110…
…100110100110001001
32222101100210211122002
4131000032212212021
51002234414403001
622150120240345
72151510350042
oct350016464611
988340724562
1031142341001
1112231048802
1260516100b5
132c23c4c015
1417160498c9
15c2407546b
hex7403a6989

31142341001 has 4 divisors (see below), whose sum is σ = 32781411600. Its totient is φ = 29503270404.

The previous prime is 31142340997. The next prime is 31142341033. The reversal of 31142341001 is 10014324113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31142341001 - 22 = 31142340997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31142341091) 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, 819535271 + ... + 819535308.

It is an arithmetic number, because the mean of its divisors is an integer number (8195352900).

Almost surely, 231142341001 is an apocalyptic number.

It is an amenable number.

31142341001 is a deficient number, since it is larger than the sum of its proper divisors (1639070599).

31142341001 is a wasteful number, since it uses less digits than its factorization.

31142341001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639070598.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31142341001 its reverse (10014324113), we get a palindrome (41156665114).

The spelling of 31142341001 in words is "thirty-one billion, one hundred forty-two million, three hundred forty-one thousand, one".

Divisors: 1 19 1639070579 31142341001