1401531437 has 2 divisors, whose sum is σ = 1401531438. Its totient is φ = 1401531436.

The previous prime is 1401531431. The next prime is 1401531457. The reversal of 1401531437 is 7341351041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1056835081 + 344696356 = 32509^2 + 18566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401531437 - 2²⁸ = 1133095981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401531431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700765718 + 700765719.

It is an arithmetic number, because the mean of its divisors is an integer number (700765719).

Almost surely, 2^1401531437 is an apocalyptic number.

It is an amenable number.

1401531437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401531437 is an equidigital number, since it uses as much as digits as its factorization.

1401531437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1401531437 is about 37437.0329620284. The cubic root of 1401531437 is about 1119.0966985899.

Adding to 1401531437 its reverse (7341351041), we get a palindrome (8742882478).

The spelling of 1401531437 in words is "one billion, four hundred one million, five hundred thirty-one thousand, four hundred thirty-seven".