31423030401 has 48 divisors (see below), whose sum is σ = 50978543616. Its totient is φ = 16862072064.

The previous prime is 31423030381. The next prime is 31423030409. The reversal of 31423030401 is 10403032413.

It is not a de Polignac number, because 31423030401 - 2⁷ = 31423030273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (31423030409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2828680 + ... + 2839766.

It is an arithmetic number, because the mean of its divisors is an integer number (1062052992).

Almost surely, 2^31423030401 is an apocalyptic number.

It is an amenable number.

31423030401 is a deficient number, since it is larger than the sum of its proper divisors (19555513215).

31423030401 is a wasteful number, since it uses less digits than its factorization.

31423030401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11598 (or 11581 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31423030401 its reverse (10403032413), we get a palindrome (41826062814).

The spelling of 31423030401 in words is "thirty-one billion, four hundred twenty-three million, thirty thousand, four hundred one".