31425401 has 16 divisors (see below), whose sum is σ = 38263680. Its totient is φ = 25194240.

The previous prime is 31425397. The next prime is 31425461. The reversal of 31425401 is 10452413.

It is a cyclic number.

It is not a de Polignac number, because 31425401 - 2² = 31425397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31425461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20810 + ... + 22268.

It is an arithmetic number, because the mean of its divisors is an integer number (2391480).

Almost surely, 2^31425401 is an apocalyptic number.

It is an amenable number.

31425401 is a deficient number, since it is larger than the sum of its proper divisors (6838279).

31425401 is a wasteful number, since it uses less digits than its factorization.

31425401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 31425401 is about 5605.8363336794. The cubic root of 31425401 is about 315.5684737644.

Adding to 31425401 its reverse (10452413), we get a palindrome (41877814).

The spelling of 31425401 in words is "thirty-one million, four hundred twenty-five thousand, four hundred one".