31401011 has 2 divisors, whose sum is σ = 31401012. Its totient is φ = 31401010.

The previous prime is 31400983. The next prime is 31401017. The reversal of 31401011 is 11010413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31401011 - 2⁶ = 31400947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31400983 and 31401001.

It is not a weakly prime, because it can be changed into another prime (31401017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700505 + 15700506.

It is an arithmetic number, because the mean of its divisors is an integer number (15700506).

Almost surely, 2^31401011 is an apocalyptic number.

31401011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31401011 is an equidigital number, since it uses as much as digits as its factorization.

31401011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 31401011 is about 5603.6605000660. The cubic root of 31401011 is about 315.4868125721.

Adding to 31401011 its reverse (11010413), we get a palindrome (42411424).

The spelling of 31401011 in words is "thirty-one million, four hundred one thousand, eleven".