1235531401 has 8 divisors (see below), whose sum is σ = 1337329224. Its totient is φ = 1134698880.

The previous prime is 1235531387. The next prime is 1235531413. The reversal of 1235531401 is 1041355321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101525776 + 1134005625 = 10076^2 + 33675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1235531401 - 2⁵ = 1235531369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235531431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238660 + ... + 243781.

It is an arithmetic number, because the mean of its divisors is an integer number (167166153).

Almost surely, 2^1235531401 is an apocalyptic number.

It is an amenable number.

1235531401 is a deficient number, since it is larger than the sum of its proper divisors (101797823).

1235531401 is a wasteful number, since it uses less digits than its factorization.

1235531401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482651.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1235531401 is about 35150.1266142812. The cubic root of 1235531401 is about 1073.0449849654.

Adding to 1235531401 its reverse (1041355321), we get a palindrome (2276886722).

The spelling of 1235531401 in words is "one billion, two hundred thirty-five million, five hundred thirty-one thousand, four hundred one".