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31420132023 = 371496196763
BaseRepresentation
bin11101010000110010…
…010010101010110111
310000002201112002021110
4131100302102222313
51003322023211043
622233442250103
72161422500310
oct352062225267
9100081462243
1031420132023
1112363933265
12610a656933
132c696720c7
141740cbb607
15c3d648b33
hex750c92ab7

31420132023 has 8 divisors (see below), whose sum is σ = 47878296448. Its totient is φ = 17954361144.

The previous prime is 31420131989. The next prime is 31420132109. The reversal of 31420132023 is 32023102413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31420132023 - 28 = 31420131767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1496196763 = 31420132023 / (3 + 1 + 4 + 2 + 0 + 1 + 3 + 2 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420130023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748098361 + ... + 748098402.

It is an arithmetic number, because the mean of its divisors is an integer number (5984787056).

Almost surely, 231420132023 is an apocalyptic number.

31420132023 is a deficient number, since it is larger than the sum of its proper divisors (16458164425).

31420132023 is a wasteful number, since it uses less digits than its factorization.

31420132023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496196773.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31420132023 its reverse (32023102413), we get a palindrome (63443234436).

The spelling of 31420132023 in words is "thirty-one billion, four hundred twenty million, one hundred thirty-two thousand, twenty-three".

Divisors: 1 3 7 21 1496196763 4488590289 10473377341 31420132023