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1053131331 = 37200325037
BaseRepresentation
bin111110110001011…
…000001001000011
32201101122121121010
4332301120021003
54124100200311
6252300132003
735045316510
oct7661301103
92641577533
101053131331
114a051317a
12254837003
1313a250945
149dc1c307
15626c8da6
hex3ec58243

1053131331 has 16 divisors (see below), whose sum is σ = 1605636864. Its totient is φ = 601464864.

The previous prime is 1053131323. The next prime is 1053131347. The reversal of 1053131331 is 1331313501.

It is not a de Polignac number, because 1053131331 - 23 = 1053131323 is a prime.

It is a super-2 number, since 2×10531313312 = 2218171200667663122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1053131298 and 1053131307.

It is not an unprimeable number, because it can be changed into a prime (1053131311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29545 + ... + 54581.

It is an arithmetic number, because the mean of its divisors is an integer number (100352304).

Almost surely, 21053131331 is an apocalyptic number.

1053131331 is a deficient number, since it is larger than the sum of its proper divisors (552505533).

1053131331 is a wasteful number, since it uses less digits than its factorization.

1053131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27050.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 1053131331 is about 32451.9850086247. The cubic root of 1053131331 is about 1017.4057266056.

Adding to 1053131331 its reverse (1331313501), we get a palindrome (2384444832).

The spelling of 1053131331 in words is "one billion, fifty-three million, one hundred thirty-one thousand, three hundred thirty-one".

Divisors: 1 3 7 21 2003 6009 14021 25037 42063 75111 175259 525777 50149111 150447333 351043777 1053131331