31423145401 has 4 divisors (see below), whose sum is σ = 31426294900. Its totient is φ = 31419995904.

The previous prime is 31423145393. The next prime is 31423145407. The reversal of 31423145401 is 10454132413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24374703376 + 7048442025 = 156124^2 + 83955^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423145401 - 2³ = 31423145393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31423145401.

It is not an unprimeable number, because it can be changed into a prime (31423145407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559736 + ... + 1579753.

It is an arithmetic number, because the mean of its divisors is an integer number (7856573725).

Almost surely, 2^31423145401 is an apocalyptic number.

It is an amenable number.

31423145401 is a deficient number, since it is larger than the sum of its proper divisors (3149499).

31423145401 is a wasteful number, since it uses less digits than its factorization.

31423145401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149498.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31423145401 its reverse (10454132413), we get a palindrome (41877277814).

The spelling of 31423145401 in words is "thirty-one billion, four hundred twenty-three million, one hundred forty-five thousand, four hundred one".