1303243131 has 16 divisors (see below), whose sum is σ = 1810181120. Its totient is φ = 833081760.

The previous prime is 1303243121. The next prime is 1303243141. The reversal of 1303243131 is 1313423031.

It is an interprime number because it is at equal distance from previous prime (1303243121) and next prime (1303243141).

It is not a de Polignac number, because 1303243131 - 2¹⁷ = 1303112059 is a prime.

It is a super-2 number, since 2×1303243131² = 3396885316997366322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303243098 and 1303243107.

It is not an unprimeable number, because it can be changed into a prime (1303243121) 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, 54145 + ... + 74418.

It is an arithmetic number, because the mean of its divisors is an integer number (113136320).

Almost surely, 2^1303243131 is an apocalyptic number.

1303243131 is a deficient number, since it is larger than the sum of its proper divisors (506937989).

1303243131 is a wasteful number, since it uses less digits than its factorization.

1303243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128706.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1303243131 is about 36100.4588751999. The cubic root of 1303243131 is about 1092.2997012125.

Adding to 1303243131 its reverse (1313423031), we get a palindrome (2616666162).

The spelling of 1303243131 in words is "one billion, three hundred three million, two hundred forty-three thousand, one hundred thirty-one".