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2031423391 is a prime number
BaseRepresentation
bin111100100010101…
…0000111110011111
312020120111000000101
41321011100332133
513130021022031
6533324241531
7101224546114
oct17105207637
95216430011
102031423391
1195275a508
124883a02a7
13264b2a19a
14153b1890b
15bd51d361
hex79150f9f

2031423391 has 2 divisors, whose sum is σ = 2031423392. Its totient is φ = 2031423390.

The previous prime is 2031423367. The next prime is 2031423439. The reversal of 2031423391 is 1933241302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2031423391 - 29 = 2031422879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031423311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015711695 + 1015711696.

It is an arithmetic number, because the mean of its divisors is an integer number (1015711696).

Almost surely, 22031423391 is an apocalyptic number.

2031423391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031423391 is an equidigital number, since it uses as much as digits as its factorization.

2031423391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2031423391 is about 45071.3145026856. The cubic root of 2031423391 is about 1266.4852891801.

Adding to 2031423391 its reverse (1933241302), we get a palindrome (3964664693).

The spelling of 2031423391 in words is "two billion, thirty-one million, four hundred twenty-three thousand, three hundred ninety-one".