31213054 has 16 divisors (see below), whose sum is σ = 50785056. Its totient is φ = 14329600.

The previous prime is 31213051. The next prime is 31213069. The reversal of 31213054 is 45031213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213051) 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, 9802 + ... + 12589.

It is an arithmetic number, because the mean of its divisors is an integer number (3174066).

Almost surely, 2^31213054 is an apocalyptic number.

31213054 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31213054 is a deficient number, since it is larger than the sum of its proper divisors (19572002).

31213054 is a wasteful number, since it uses less digits than its factorization.

31213054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22451.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 31213054 is about 5586.8644157524. The cubic root of 31213054 is about 314.8560827412.

Adding to 31213054 its reverse (45031213), we get a palindrome (76244267).

It can be divided in two parts, 312 and 13054, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 31213054 in words is "thirty-one million, two hundred thirteen thousand, fifty-four".