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3131313044 = 22782828261
BaseRepresentation
bin1011101010100100…
…0000101110010100
322002020010011222012
42322221000232110
522403104004134
61234414523352
7140411502356
oct27251005624
98066104865
103131313044
1113675a9922
12734806558
133ab96c872
14219c290d6
15134d816ce
hexbaa40b94

3131313044 has 6 divisors (see below), whose sum is σ = 5479797834. Its totient is φ = 1565656520.

The previous prime is 3131313041. The next prime is 3131313109. The reversal of 3131313044 is 4403131313.

It can be written as a sum of positive squares in only one way, i.e., 2962624900 + 168688144 = 54430^2 + 12988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131313041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391414127 + ... + 391414134.

It is an arithmetic number, because the mean of its divisors is an integer number (913299639).

Almost surely, 23131313044 is an apocalyptic number.

It is an amenable number.

3131313044 is a deficient number, since it is larger than the sum of its proper divisors (2348484790).

3131313044 is a wasteful number, since it uses less digits than its factorization.

3131313044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782828265 (or 782828263 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3131313044 is about 55958.1365308031. The cubic root of 3131313044 is about 1462.9927110336.

Adding to 3131313044 its reverse (4403131313), we get a palindrome (7534444357).

The spelling of 3131313044 in words is "three billion, one hundred thirty-one million, three hundred thirteen thousand, forty-four".

Divisors: 1 2 4 782828261 1565656522 3131313044