1540231401 has 8 divisors (see below), whose sum is σ = 2053849504. Its totient is φ = 1026717120.

The previous prime is 1540231397. The next prime is 1540231417. The reversal of 1540231401 is 1041320451.

1540231401 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1540231401 - 2² = 1540231397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540231421) 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, 20586 + ... + 59196.

It is an arithmetic number, because the mean of its divisors is an integer number (256731188).

Almost surely, 2^1540231401 is an apocalyptic number.

It is an amenable number.

1540231401 is a deficient number, since it is larger than the sum of its proper divisors (513618103).

1540231401 is a wasteful number, since it uses less digits than its factorization.

1540231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51911.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1540231401 is about 39245.7819516951. The cubic root of 1540231401 is about 1154.8581876449.

Adding to 1540231401 its reverse (1041320451), we get a palindrome (2581551852).

The spelling of 1540231401 in words is "one billion, five hundred forty million, two hundred thirty-one thousand, four hundred one".