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331022131 = 1130092921
BaseRepresentation
bin10011101110101…
…111111100110011
3212001212122222221
4103232233330303
51134220202011
652502541511
711126433046
oct2356577463
9761778887
10331022131
1115a942910
1292a37897
13537700ab
1431d6ac5d
151e0da971
hex13baff33

331022131 has 4 divisors (see below), whose sum is σ = 361115064. Its totient is φ = 300929200.

The previous prime is 331022059. The next prime is 331022149. The reversal of 331022131 is 131220133.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 331022131 - 29 = 331021619 is a prime.

It is a super-2 number, since 2×3310221312 = 219151302423562322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331022171) 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, 15046450 + ... + 15046471.

It is an arithmetic number, because the mean of its divisors is an integer number (90278766).

Almost surely, 2331022131 is an apocalyptic number.

331022131 is a deficient number, since it is larger than the sum of its proper divisors (30092933).

331022131 is a wasteful number, since it uses less digits than its factorization.

331022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30092932.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331022131 is about 18194.0136033806. The cubic root of 331022131 is about 691.7550581250.

Adding to 331022131 its reverse (131220133), we get a palindrome (462242264).

The spelling of 331022131 in words is "three hundred thirty-one million, twenty-two thousand, one hundred thirty-one".

Divisors: 1 11 30092921 331022131