1214331731 has 2 divisors, whose sum is σ = 1214331732. Its totient is φ = 1214331730.

The previous prime is 1214331683. The next prime is 1214331737. The reversal of 1214331731 is 1371334121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1214331731 - 2¹⁸ = 1214069587 is a prime.

It is a super-2 number, since 2×1214331731² = 2949203105826912722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1214331731.

It is not a weakly prime, because it can be changed into another prime (1214331737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607165865 + 607165866.

It is an arithmetic number, because the mean of its divisors is an integer number (607165866).

Almost surely, 2^1214331731 is an apocalyptic number.

1214331731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214331731 is an equidigital number, since it uses as much as digits as its factorization.

1214331731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 1214331731 is about 34847.2628910794. The cubic root of 1214331731 is about 1066.8723207747.

Adding to 1214331731 its reverse (1371334121), we get a palindrome (2585665852).

The spelling of 1214331731 in words is "one billion, two hundred fourteen million, three hundred thirty-one thousand, seven hundred thirty-one".